MINISTRY OF
HEALTH
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SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom – Happiness
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No. 31/2020/TT-BYT
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Hanoi, December 31, 2020
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CIRCULAR
PROMULGATING 10 TECHNICAL
REGULATIONS FOR FOOD ADDITIVES
Pursuant to the Law on Food Safety No. 55/2010/QH12 dated
June 17, 2010;
Pursuant to the Law on Standards and Technical Regulations
No. 68/2006/QH13 dated June 29, 2006;
Pursuant to Decree No. 127/2007/ND-CP dated August 01, 2007
of the Government elaborating implementation of certain Articles of the Law on
Standards and Technical Promulgations and Decree No. 78/2018/ND-CP dated May
16, 2018 of the Government on amendments to Decree No. 127/2007/ND-CP dated
August 01, 2007 of the Government elaborating certain Articles of the Law on
Standards and Technical Regulations;
Pursuant to Decree No. 15/2018/ND-CP dated February 02, 2018
of the Government elaborating on certain Articles of the Law on Food Safety;
Pursuant to Decree No. 75/2017/ND-CP dated June 20, 2017 of
the Government on function, tasks, powers and organizational structures of the
Ministry of Health;
At the request of the Director General of the Vietnam Food
Safety Authority (VFA);
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Article 1. Promulgating National Technical Regulations
10 National Technical Regulations for food additives
promulgated together with this Circular include:
1. QCVN 4-24:2020/BYT - National technical regulation of
Calcium cyclamate;
2. QCVN 4-25:2020/BYT - National technical regulation of
Sodium cyclamate
3. QCVN 4-26:2020/BYT - National technical regulation of
Calcium saccharin;
4. QCVN 4-27:2020/BYT - National technical regulation of
Potassium saccharin;
5. QCVN 4-28:2020/BYT - National technical regulation of Sodium
saccharin;
6. QCVN 4-29:2020/BYT - National technical regulation of
Sucralose;
7. QCVN 4-30:2020/BYT - National technical regulation of
Alitame;
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9. QCVN 4-32:2020/BYT - National technical regulation of
Polyglycitol syrup;
10. QCVN 4-33:2020/BYT - National technical regulation of
Sorbitol syrup.
Article 2. Entry into force
This Circular comes into force from September 01, 2021.
Article 3. Implementation Clauses
1. Production and sale of food additives prescribed in
Article 1 hereof which have been granted Certificates of declaration of
conformity with regulation on food safety before the day on which this Circular
comes into force may continue until the expiration dates of the Certificates
and expiration dates of the products.
2. Circulation of the food additives prescribed in Article 1
hereof that have had the product self-declaration and have been produced and
put up for sale before the day on which this Circular comes into force may
continue until their expiration dates.
Article 4. Responsibility for implementation
Director General of Vietnam Food Safety Authority, Heads of
units affiliated to the Ministry of Health; Directors of Departments of Health
of provinces and central-affiliated cities, relevant organizations and
individuals are responsible for implementation of this Circular.
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PP. MINISTER
DEPUTY MINISTER
Truong Quoc Cuong
QCVN 4-24:2020/BYT
NATIONAL
TECHNICAL REGULATION OF CALCIUM CYCLAMATE
Foreword
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NATIONAL
TECHNICAL REGULATION OF CALCIUM CYCLAMATE
I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Calcium cyclamate.
2. Regulated entities
This Regulation applies to:
2.1. Producers and traders and users
of sorbitol syrup (hereinafter referred to as “entities”).
2.2. Relevant regulatory bodies.
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3.1. “C.A.S” stands for Chemical
Abstracts Service.
3.2. “ADI” stands for Acceptable
Daily Intake.
3.3. “INS” stands for International
Numbering System.
3.4. "TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications and tests for food
additive - Calcium cyclamate are specified in the Annex to this Regulation.
5. Tests for Calcium cyclamate are specified in the
Annex to this Regulation. Other tests may be applied if their equivalent
accuracy is ensured.
6. Sampling adheres to applicable
regulations.
III. REGULATORY REQUIREMENTS
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Entities must declare conformity by
way of adopting the product self-declaration methods as prescribed in Articles
4 and 5 of the Government’s Decree No. 15/2018/NĐ-CP dated February 02, 2018 on elaboration of some Articles of the Law on Food Safety
and Article 3 of the Government's Decree No. 155/2018/NĐ-CP dated November 12,
2018 on amendments to regulations relating to business conditions under state
management of the Ministry of Health.
8. Labelling
The labelling of sorbitol syrup
shall comply with the Government’s Decree No. 43/2017/NĐ-CP dated April 14,
2017 on goods labels and relevant regulations of law.
9. Inspection of Calcium cyclamate
The inspection of quality and safety
of calcium cyclamate shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
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13. The Vietnam Food Administration
shall, according to its managerial duties, suggest amendments to this
Regulation to the Ministry of Health.
14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - CALCIUM CYCLAMATE
1. Synonyms
Calcium cyclohexylsulfamate,
calcium cyclohexanesulfamate INS 952(ii)
ADI: 0-11 mg/kg bw for cyclamic
acid and its calcium and sodium salts (as cyclamic acid)
2. Definition
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Chemical names
Calcium cyclamate, Calcium
cyclohexylsulfamate, calcium cyclohexanesulfamate
C.A.S. number
139-06-0
Chemical formula
C12H24CaN2O6S2.2H2O
Structural formula

Formula weight
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3. Description
White colourless crystals or
crystalline powder. Approximately 30 times sweeter than sucrose.
4. HS code
2933.59.90
5. Specifications
5.1. Identification
Solubility
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Precipitate formation
Passes test
Test for calcium
Passes test
5.2. Purity
Loss on drying
Not less than 6.0% and not more
than 9.0% (140°C, 2 h)
Cyclohexylamine
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Dicyclohexylamine
Not more than 1 mg/kg
Lead
Not more than 1 mg/kg
5.3. Assay
Not less than 98.0% and not more
than 101.0% on the anhydrous basis
6. Tests
6.1. Identification
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Solubility
Determined under TCVN 6469:2010,
Food additives - Methods for evaluating appearance and physical properties (see
3.7).
Precipitate formation
To 10 ml of a 1 in 100 solution of
the sample add 1 ml of hydrochloric acid TS 10% (w/v), mix, add 1 ml of barium
chloride TS (BaCl2.2H2O) 12% (w/v). The solution
remains clear, but upon the addition of 1 ml sodium nitrite TS 10 % (w/v), a
white precipitate is formed.
Test for calcium
Determined under TCVN 6534:2010, Food
additives - Identification tests (see 4.1.2).
6.2. Purity
Loss on drying
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Cyclohexylamine
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.3).
Dicyclohexylamine
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.4).
Note: The procedure uses a packed
column gas chromatography (GC). In the absence of a packed column GC,
capillary column may be used. GC conditions need to be established.
- Agilent DB-5 column (30 m x 0.25
mm x 0.25 µm)
- Gradient:
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Time
(minute)
Temperature
(ºC)
Hold
time (minute)
0,0
40,0
1,0
10,0
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2,0
20,0
300,0
2,0
The retention times for
dicyclohexylamine and nitrobenzene are about 8 minutes and 13 minutes
Lead Determined under TCVN 8900-6:2012,
Food additives - Determination of inorganic components - Part 6: Measurement
of antimony, barium, cadmium, chromium, copper, lead and zinc by flame atomic
abrsorption spectrometry; or
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6.3. Method of essay
Dissolve about 0.4 g of the sample
accurately weighed, in a mixture of 50 ml of water and 5 ml of dilute
hydrochloric acid TS 10% (w/v) and titrate with 0.1M sodium nitrite.
Add the last ml of titrant dropwise
until a blue colour is produced immediately when a glass rod dipped into the
titrated solution is streaked on a piece of starch iodide test paper or
alternatively the end point may be detected electro-metrically. When the
titration is complete, the end-point is reproducible after the mixture has
been allowed to stand for 1 min.
Calculate the percentage (%) of calcium
cyclamate in the sample on the anhydrous basis according to the following
formula:

Where:
V is the volume of 0.1 M sodium
nitrite used for titration, in milliliters (ml);
19.83 is the milligrams (mg) of
calcium cyclamate equivalent to 1 ml of 0.1 M sodium nitrite;
W is the weight of the test
sample, calculated on the anhydrous basis, in milligrams (mg);
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QCVN
4-25:2020/BYT
NATIONAL
TECHNICAL REGULATION OF SODIUM CYCLAMATE
Foreword
QCVN 4-25:2020/BYT is developed by
the Drafting Board for National technical regulation on food additives,
submitted by the Vietnam Food Administration for approval, appraised by the
Ministry of Science and Technology and promulgated by the Minister of Health
together with the Circular No. 31/2020/TT-BYT dated December 31, 2020.
NATIONAL
TECHNICAL REGULATION OF SODIUM CYCLAMATE
I. GENERAL
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This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Sodium cyclamate.
2. Regulated entities
This Regulation applies to:
2.1. Producers and traders and users
of food additive - Sodium cyclamate (hereinafter referred to as “entities”).
2.2. Relevant regulatory bodies.
3. Interpretation of terms and
acronyms
3.1. “C.A.S.” number means a
chemical substance numerical identifier assigned by Chemical Abstracts
Service - a division of America Chemical Society.
3.2. “ADI” stands for Acceptable
Daily Intake.
3.3. “INS” stands for International
Numbering System.
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II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications for food additive -
Sodium cyclamate are specified in the Annex to this Regulation
5. Tests for Sodium cyclamate are specified in the
Annex to this Regulation. Other tests may be applied if their equivalent
accuracy is ensured.
6. Sampling adheres to applicable regulations.
III. REGULATORY REQUIREMENTS
7. Declaration of conformity
Entities must declare conformity by
way of adopting the product self-declaration methods as prescribed in Articles
4 and 5 of the Government’s Decree No. 15/2018/NĐ-CP dated February 02, 2018 on
elaboration of some Articles of the Law on Food Safety and Article 3 of the
Government's Decree No. 155/2018/NĐ-CP dated November 12, 2018 on amendments to
regulations relating to business conditions under state management of the
Ministry of Health.
8. Labelling
The labelling of sodium cyclamate
shall comply with the Government’s Decree No. 43/2017/NĐ-CP dated April 14,
2017 on goods labels and relevant regulations of law.
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The inspection of quality and safety
of sodium cyclamate shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation.
13. The Vietnam Food Administration
shall, according to its managerial duties, suggest amendments to this
Regulation to the Ministry of Health.
14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
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SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - SODIUM CYCLAMATE
1. Synonyms
Sodium cyclohexylsulfamate, sodium
cyclohexanesulfamate INS 952(iv)
ADI: 0-11 mg/kg bw for cyclamic
acid and its calcium and sodium salts (as cyclamic acid)
2. Definition
Chemical names
Sodium cyclamate, sodium
cyclohexylsulfamate, sodium cyclohexanesulfamate
C.A.S. number
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Chemical formula
C6H12NNaO3S
Structural formula

Formula weight
201,22
3. Description
White colourless crystals or
crystalline powder
4. HS code
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5. Specifications
5.1. Identification
Solubility
Soluble in water, practically
insoluble in ethanol
Precipitate formation
Passes test
Test for sodium
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5.2. Purity
Loss on drying
Not more than 1.0% (105 ºC , 1 h)
Cyclohexylamine
Not more than 10 mg/kg
Dicyclohexylamine
Not more than 1 mg/kg
Lead
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5.3. Assay
Not less than 98.0% and not more
than 101.0% on the dried basis
6. Tests
6.1. Identification
Solubility
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.7).
Precipitate formation
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Test for sodium
Determined under TCVN 6534:2010,
Food additives - Identification tests (see 4.1.10).
6.2. Purity
Loss on drying
Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.3.3), at 105ºC for 1 h.
Cyclohexylamine
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.3).
Dicyclohexylamine
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Note: The procedure uses a packed
column GC. In the absence of a packed column GC, capillary column may be
used. GC conditions need to be established.
- Agilent DB-5 column (30 m x 0.25
mm x 0.25 µm)
- Gradient:
Time
(minute)
Temperature
(ºC)
Hold
time (minute)
0,0
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1,0
10,0
260,0
2,0
20,0
300,0
2,0
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The retention times for
dicyclohexylamine and nitrobenzene are about 8 minutes and 13 minutes
Lead Determined under TCVN 8900-6:2012,
Food additives - Determination of inorganic components - Part 6: Measurement
of antimony, barium, cadmium, chromium, copper, lead and zinc by flame atomic
abrsorption spectrometry; or
TCVN 8900-8:2012, Food
additives - Determination of inorganic components - Part 8: Measurement of
lead and cadmium by graphite furnace atomic absorption spectrometry.
Dissolve about 0.4 g of the sample
accurately weighed, in a mixture of 50 ml of water and 5 ml of dilute
hydrochloric acid TS 10% (w/v) and titrate with 0.1M sodium nitrite.
Add the last ml of titrant
dropwise until a blue colour is produced immediately when a glass rod dipped
into the titrated solution is streaked on a piece of starch iodide test paper
or alternatively the end point may be detected electrometrically. When the
titration is complete, the end-point is reproducible after the mixture has
been allowed to stand for 1 min.
Calculate the percentage (%) of calcium
cyclamate in the sample (X) on the anhydrous basis according to the following
formula:

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V is the volume of 0.1 M sodium
nitrite used for titration, in milliliters (ml);
20.12 is the milligrams (mg) of
sodium cyclamate equivalent to 1 ml of 0.1 M sodium nitrite;
W is the weight of the test
sample, calculated on the anhydrous basis, in milligrams (mg);
1000 is the conversion of milligrams
(mg) to grams (g).
QCVN
4-26:2020/BYT
NATIONAL
TECHNICAL REGULATION OF CALCIUM SACCHARIN
Foreword
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NATIONAL
TECHNICAL REGULATION OF CALCIUM SACCHARIN
I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Calcium saccharin.
2. Regulated entities
This Regulation applies to:
2.1. Producers and traders and users
of food additive - Calcium saccharin (hereinafter referred to as “entities”).
2.2. Relevant regulatory bodies.
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3.1. “ADI” stands for Acceptable
Daily Intake.
3.2. “INS” stands for International
Numbering System.
3.3. “TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications for food additive -
Calcium saccharin are specified in the Annex to this Regulation.
5. Tests for Sodium cyclamate are specified in the
Annex to this Regulation. Other tests may be applied if their equivalent
accuracy is ensured.
6. Sampling adheres to applicable
regulations.
III. REGULATORY REQUIREMENTS
7. Declaration of conformity
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8. Labelling
The labelling of calcium saccharin
shall comply with the Government’s Decree No. 43/2017/NĐ-CP dated April 14,
2017 on goods labels and relevant regulations of law.
9. Inspection of Calcium saccharin
The inspection of quality and safety
of Calcium saccharin shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation.
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14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - CALCIUM SACCHARIN
1. Synonyms
INS 954(ii)
ADI: 0 - 5 mg/kg bw for saccharin
and its calcium, potassium and sodium salts
2. Definition
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Calcium salt hydrate (2:7) of
1,2-benzisothiazole-3-one-1,1-dioxide,
3-oxo2,3-dihydrobenzo[d]isothiazol-1,1- dioxide,
2,3-dihydro-3-oxobenzisosulfonazole; calcium o-benzosulfimide.
Chemical formula
C14H8CaN2O6S2 · 3½H2O
Structural formula

Formula weight
467,48
3. Description
White crystals or a white,
crystalline powder, odourless or with a faint, aromatic odour.
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2925.11.00
5. Specifications
5.1. Identification
Solubility
Freely soluble in water, soluble
in ethanol
Melting range
226 ºC - 230 ºC
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Passes test
Derivation to fluorescent
substance
Passes test
Test for calcium
Passes test
5.2. Purity
Loss on drying
Not more than 15% (120 ºC , 4h)
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Passes test
Readily carbonizable substances
Passes test
Toluenesulfonamides
Not more than 25 mg/kg
Selenium
Not more than 30 mg/kg
Lead
Not more than 1 mg/kg
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Not less than 99% after drying
6. Tests
6.1. Identification
Solubility
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.7).
Melting range
To 10 ml of a 1 in 10 solution add
1 ml of concentrated hydrochloric acid. A crystalline precipitate of
saccharin is formed. Wash the precipitate well with cold water and dry at 105oC
for 2 h.
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Derivation to salicylic acid
Dissolve about 0.1 g of the sample
in 5 ml of 5% sodium hydroxide solution. Evaporate to dryness and gently fuse
the residue over a small flame until it no longer evolves ammonia. After the
residue has cooled, dissolve it in 20 ml of water, neutralize the solution
with dilute hydrochloric acid TS 10% (w/v) and filter.
The addition of a drop of ferric
chloride TS (FeCl3.6H2O) 9% (w/v) to the filtrate
produces a violet colour.
Derivation to fluorescent
substance
Mix 20 mg of the sample with 40 mg
of resorcinol, add 10 drops of sulfuric acid, and heat the mixture in a
liquid bath at 200º for 3 min. After cooling, add 10 ml of water and an
excess of sodium hydroxide TS (4.3 g of sodium hydroxide in 100 ml of water).
A fluorescent green liquid is produced.
Test for calcium
Determined under TCVN 6534:2010, Food
additives - Identification tests (see 4.1.2).
6.2. Purity
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Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.1), at 120ºC for 4 h.
Benzoic and salicylic acid
Add ferric chloride TS (FeCl3.6H2O)
9% (w/v) dropwise to 10 ml of a hot, saturated solution of the sample. No
precipitate or violet colour appears.
Readily carbonizable substances
Dissolve 0.2 g of the sample in 5
ml of sulfuric acid TS 94.5% to 95.5% (w/v). Keep at 48 ºC to 50 ºC for 10
min. The colour should not be darker than a very light brownishyellow
(Matching Fluid A).
Matching Fluid A:
Reagents
1. Diluted Hydrochloric Acid:
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2. Cobalt(II) chloride
solution:
Dissolve about 65 g of cobaltous
chloride (CoCI2.6H2O) in a sufficient quantity of
diluted hydrochloric acid and water to make 1000 ml.
Standard Cobalt(II) chloride
solution:
Pipet 5 ml of this solution into a
250-ml flask with a flat stopper, add 5 ml of hydrogen peroxide (2.5 to 3.5%
w/v), then 15 ml of a 20 % solution of sodium hydroxide (app. 20% w/v). Boil
for 10 minutes, cool, and add 2 g of potassium iodide and 20 ml of sulphuric
acid (app. 20% w/v). After the precipitate is completely dissolved, titrate
the liberated iodine with sodium thiosulphate (0.1 N), adding 3 ml of starch
TS as indicator.
Conduct a blank titration using
the same reagents.
Each millilitre (ml) of 0.1N
sodium thiosulphate is equivalent to 23.79 mg of CoCI2.6H2O.
Adjust the final volume of the
solution by adding an adequate amount of the diluted hydrochloric acid so
that each millilitre (ml) contains 59.5 mg of CoCI2.6H2O.
3. Ferric (III) Chloride solution:
Dissolve about 55 g of Ferric
(III) Chloride (FeCI3.6H2O) in a sufficient quantity of
diluted hydrochloric acid and water to make 1000 ml.
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Pipet 10 ml of this solution into
a 250-ml flask with a flat stopper, add 15 ml of water, 2 g of potassium
iodide and 5 ml of concentrated hydrochloric acid (36.5 to 38% w/v), and
leave the mixture to stand for 15 minutes. Dilute with 100 ml of distilled
water, and titrate the liberated iodine with 0.1N sodium thiosulphate
solution, adding 3 ml of starch TS as indicator.
Conduct a blank titration using
the same reagents.
Each millilitre (ml) of 0.1N
sodium thiosulphate is equivalent to 27.03 mg of FeCI3.6H2O.
Adjust the final volume of the
solution by adding an adequate amount of the diluted hydrochloric acid so
that each millilitre (ml) contains 45.0 mg of FeCI3.6H2O.
4. Copper (II) sulphate solution:
Dissolve about 65 g of Copper (II)
sulphate solution (CuSO4.5H2O) in a sufficient quantity
of diluted hydrochloric acid and water to make 1000 ml.
Standard Copper (II) sulphate
solution:
Pipet 10 ml of this solution into
a 250-ml flask with a flat stopper, add 40 ml of water, 4 ml of acetic acid
(of a concentration not less than 99.7% by volume), 3 g potassium iodide and
5 ml of concentrated hydrochloric acid (36.5 to 38% w/v). Titrate the
liberated iodine with sodium thiosulphate (0.1 N), adding 3 ml of starch TS as
indicator.
Conduct a blank titration using
the same reagents.
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Adjust the final volume of the
solution by adding an adequate amount of the diluted hydrochloric acid so
that each millilitre (ml) contains 62.4 mg of CuSO4.5H2O.
Mix Matching Fluid A:
Prepare a colorimetric solution
from cobalt (II) chloride solution, ferric (III) chloride solution, copper
(II) sulfate solution and water in the ratio of 0.1 : 0.4 : 0.1 : 4.4
(volume).
Toluenesulfonamides
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.16).
NOTE: The procedure uses a packed
column GC. In the absence of a packed column GC, capillary GC in the
splitless mode, using an equivalent capillary column, may be used. GC
conditions need to be established.
- Agilent DB-5 column (30 m x
0,25mm x 0,25µm µm)
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Time
(minute)
Temperature
(ºC)
Hold
time (minute)
0,0
180,0
1,0
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260,0
5,0
20,0
300,0
2,0
The retention times for o-toluene
sulfonamide, p-toluene sulfonamide and n-tricosane are about 5, 6 and 9
minutes, respectively.
Selenium
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Lead
Determined under TCVN 8900-6:2012,
Food additives. Determination of inorganic components - Part 6:
Measurement of antimony, barium, cadmium, chromium, copper, lead and zinc by
flame atomic abrsorption spectrometry; or
- TCVN 8900-8:2012, Food
additives - Determination of inorganic components - Part 8: Measurement of
lead and cadmium by graphite furnace atomic absorption spectrometry.
6.3. Method of essay
Weigh accurately about 0.5 g of
the sample and transfer quantitatively to a separator with the aid of 10 ml of
water. Add 2 ml of dilute hydrochloric acid TS 10 % (w/v), and extract the
precipitated saccharin first with 30 ml, then with five 20 ml portions, of a
liquid composed of 9 volumes of chloroform and 1 volume of ethanol. Filter each
extract through a small filter paper moistened with the solvent mixture. Evaporate
the combined filtrates on a steam bath to dryness with the aid of a current
of air. Dissolve the residue in 75 ml of hot water, cool, add
phenolphthalein TS, and titrate with 0.1 N sodium hydroxide.
Calculation
Calculate the percentage (%) of calcium
saccharin in the sample (X) according to the following formula:

Where:
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20.22 is the milligrams (mg) of
calcium saccharin equivalent to 1 ml of 0.1 N sodium hydroxide;
W is the weight of the test
sample, in grams (g);
1000 is the conversion of
milligrams (mg) to grams (g).
QCVN
4-27:2020/BYT
NATIONAL
TECHNICAL REGULATION OF POTASSIUM SACCHARIN
Foreword
QCVN 4-27:2020/BYT is developed by
the Drafting Board for National technical regulation on food additives,
submitted by the Vietnam Food Administration for approval, appraised by the
Ministry of Science and Technology and promulgated by the Minister of Health
together with the Circular No. 31/2020/TT-BYT dated December 31, 2020.
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NATIONAL
TECHNICAL REGULATION OF POTASSIUM SACCHARIN
I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Potassium saccharin.
2. Regulated entities
This Regulation applies to:
2.1. Producers and traders and users
of food additive - Potassium saccharin (hereinafter referred to as “entities”).
2.2. Relevant regulatory bodies.
3. Interpretation of terms and
acronyms
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3.2. “ADI” stands for Acceptable
Daily Intake.
3.3. “INS” stands for International Numbering
System.
3.4. “TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications for food additive -
Potassium saccharin are specified in the Annex to this Regulation.
5. Tests for Potassium saccharin are specified in the
Annex to this Regulation. Other tests may be applied if their equivalent
accuracy is ensured.
6. Sampling adheres to applicable
regulations.
III. REGULATORY REQUIREMENTS
7. Declaration of conformity
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8. Labelling
The labelling of Potassium saccharin
shall comply with the Government’s Decree No. 43/2017/NĐ-CP dated April 14,
2017 on goods labels and relevant regulations of law.
9. Inspection of Potassium saccharin
The inspection of quality and safety
of Potassium saccharin shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation.
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14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - POTASSIUM SACCHARIN
1. Synonyms
INS 954(iii)
ADI: 0 - 5 mg/kg bw for saccharin
and its calcium, potassium and sodium salts
2. Definition
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Potassium salt of
1,2-benzisothiazole-3(2H)-one-1,1-dioxide monohydrate,
3-oxo-2,3-dihydrobenzo[d]isothiazol-1,1-dioxide monohydrate,
2,3-dihydro-3-oxobenziso-sulfonazole monohydrate; potassium o-benzosulfimide
C.A.S. number
10332-51-1
Chemical formula
C7H4KNO3S
· H2O
Structural formula

Formula weight
239,77
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White crystals or a white,
crystalline powder, odourless or with a faint, aromatic odour.
4. HS code
2925.11.00
5. Specifications
5.1. Identification
Solubility
Freely soluble in water; sparingly
soluble in ethanol
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226 ºC - 230 ºC
Derivation to salicylic acid
Passes test
Derivation to fluorescent
substance
Passes test
Test for potassium
Passes test
5.2. Purity
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Not more than 8% (120 ºC , 4 h)
Acidity and alkalinity
Passes test
Benzoic and salicylic acid
Passes test
Readily carbonizable substances
Passes test
Toluenesulfonamides
Not more than 25 mg/kg
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Not more than 30 mg/kg
Lead
Not more than 1 mg/kg
5.3. Assay
Not less than 99% and not more
than 101% on the dried basis.
6. Tests
6.1. Identification
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Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.7).
Melting range
To 10 ml of a 1 in 10 (volume)
solution add 1 ml of concentrated hydrochloric acid. A crystalline
precipitate of saccharin is formed. Wash the precipitate well with cold water
and dry at 105oC for 2 h.
Determine melting range of
saccharin under TCVN 6469:2010, Food additives - Methods for evaluating
appearance and physical properties (see 3.2).
Derivation to salicylic acid
Dissolve about 0.1 g of the sample
in 5 ml of 5% sodium hydroxide solution. Evaporate to dryness and gently fuse
the residue over a small flame until it no longer evolves ammonia. After the
residue has cooled, dissolve it in 20 ml of water, neutralize the solution
with dilute hydrochloric acid TS 10% (w/v) and filter.
The addition of a drop of ferric
chloride TS (FeCl3.6H2O) 9% (w/v) to the filtrate
produces a violet colour.
Derivation to fluorescent
substance
Mix 20 mg of the sample with 40 mg
of resorcinol, add 10 drops of sulfuric acid, and heat the mixture in a
liquid bath at 200º for 3 min. After cooling, add 10 ml of water and an
excess of sodium hydroxide TS (4.3 g of sodium hydroxide in 100 ml of water).
A fluorescent green liquid is produced.
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Determined under TCVN 6534:2010, Food
additives - Identification tests (see 4.1.9).
Test the residue obtained by
igniting 2 g of the sample.
6.2. Purity
Loss on drying
Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.1), at 120ºC for 4 h.
Acidity and alkalinity
Dissolve 1 g of the sample in 10
ml of freshly boiled and cooled water. Add a drop of phenolphthalein TS (dissolve
0.2 g of phenolphthalein in 60 ml of 90% ethanol, and dilute to 100
ml with water). No pink colour should appear. Add a drop of 0.1 N sodium
hydroxide. A pink colour should appear.
Benzoic and salicylic acid
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Readily carbonizable substances
Dissolve 0.2 g of the sample in 5
ml of sulfuric acid TS 94.5% to 95.5% (w/v). Keep at 48 ºC to 50 ºC for 10
min. The colour should not be darker than a very light brownishyellow
(Matching Fluid A).
Matching Fluid A:
Reagents
1. Diluted Hydrochloric Acid:
Dilute 25 ml of concentrated
hydrochloric acid (of a concentration 36.5% to 38 % w/v) in 975 ml of water.
2. Cobalt (II) Chloride CS:
Dissolve about 65 g of cobaltous
chloride (CoCI2.6H2O) in a sufficient quantity of
diluted hydrochloric acid and water to make 1000 ml.
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Pipet 5 ml of this solution into a
250-ml flask with a flat stopper, add 5 ml of hydrogen peroxide (2.5 to 3.5%
w/v), then 15 ml of a 20 % solution of sodium hydroxide (app. 20% w/v). Boil
for 10 minutes, cool, and add 2 g of potassium iodide and 20 ml of sulphuric
acid (app. 20% w/v). After the precipitate is completely dissolved, titrate
the liberated iodine with sodium thiosulphate (0,1 N), adding 3 ml of starch
TS as indicator.
Conduct a blank titration using
the same reagents.
Each millilitre (ml) of 0.1N
sodium thiosulphate is equivalent to 23.79 mg of CoCI2.6H2O.
Adjust the final volume of the solution
by adding an adequate amount of the diluted hydrochloric acid so that each
millilitre (ml) contains 59.5 mg of CoCI2.6H2O.
3. Ferric (III) Chloride solution:
Dissolve about 55 g of Ferric
(III) Chloride (FeCI3.6H2O) in a sufficient quantity of
diluted hydrochloric acid and water to make 1000 ml.
Ferric (III) Chloride solution:
Pipet 10 ml of this solution into
a 250-ml flask with a flat stopper, add 15 ml of water, 2 g of potassium
iodide and 5 ml of sulphuric acid (36.5 to 38% w/v), and leave the mixture to
stand for 15 minutes. Dilute with 100 ml of distilled water, and titrate the
liberated iodine with 0.1N sodium thiosulphate solution, adding 3 ml of
starch TS as indicator.
Conduct a blank titration using
the same reagents.
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Adjust the final volume of the
solution by adding an adequate amount of the diluted hydrochloric acid so
that each millilitre (ml) contains 45.0 mg of FeCI3.6H2O.
4. Copper (II) sulphate solution:
Dissolve about 65 g of Copper (II)
sulphate solution (CuSO4.5H2O) in a sufficient quantity
of diluted hydrochloric acid and water to make 1000 ml.
Standard Copper (II) sulphate
solution:
Pipet 10 ml of this solution into
a 250-ml flask with a flat stopper, add 40 ml of water, 4 ml of acetic acid
(of a concentration not less than 99.7% by volume), 3 g potassium iodide and
5 ml of concentrated hydrochloric acid (36.5 to 38% w/v). Titrate the
liberated iodine with sodium thiosulphate (0.1 N), adding 3 ml of starch TS
as indicator.
Conduct a blank titration using
the same reagents.
Each millilitre (ml) of 0.1N
sodium thiosulphate is equivalent to 24.97 mg of CuSO4.5H2O.
Adjust the final volume of the
solution by adding an adequate amount of the diluted hydrochloric acid so
that each millilitre (ml) contains 62.4 mg of CuSO4.5H2O.
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Prepare a colorimetric solution
from cobalt (II) chloride solution, ferric (III) chloride solution, copper
(II) sulfate solution and water in the ratio of 0.1 : 0.4 : 0.1 : 4.4
(volume).
Toluenesulfonamides
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.16).
NOTE: The procedure uses a packed
column GC. In the absence of a packed column GC, capillary GC in the
splitless mode, using an equivalent capillary column, may be used. GC
conditions need to be established. Refer to the conditions below:
- Agilent DB-5 column (30 m x
0,25mm mm x 0,25µm µm)
- Gradient:
Time
(minute)
Temperature
(ºC)
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0,0
180,0
1,0
10,0
260,0
5,0
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300,0
2,0
The retention times for o-toluene
sulfonamide, p-toluene sulfonamide and n-tricosane are about 5, 6 and 9
minutes, respectively.
Selenium
Determined under TCVN 8900-5:2012,
Food additives - Determination of inorganic components - Part 5: Limit
tests (section 2.8).
Lead
Determined under TCVN 8900-6:2012,
Food additives. Determination of inorganic components - Part 6: Measurement
of antimony, barium, cadmium, chromium, copper, lead and zinc by flame atomic
abrsorption spectrometry; or
TCVN 8900-8:2012, Food
additives - Determination of inorganic components - Part 8: Measurement of
lead and cadmium by graphite furnace atomic absorption spectrometry
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Dissolve about 0.3 g of the dried
sample, accurately weighed, in 20 ml of glacial acetic acid. Add 2 drops of
1% crystal violet-glacial acetic acid TS as indicator, and titrate with 0.1 N
perchloric acid. End-point is where violet colour of the solution changes to
green, via blue. Perform a blank determination, and make any necessary
correction.
Calculate the percentage (%) of
potassium saccharin in the sample (X) according to the following formula:

Where:
V is the volume of 0.1 N
perchloric acid used for titration, in milliliters (ml);
22.18 is the milligrams (mg) of
potassium saccharin equivalent to 1 ml of 0.1 N perchloric acid;
W is the weight of the test sample
after drying, in grams (g);
1000 is the conversion of milligrams
(mg) to grams (g).
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NATIONAL
TECHNICAL REGULATION OF SODIUM SACCHARIN
Foreword
QCVN 4-28:2020/BYT is developed by
the Drafting Board for National technical regulation on food additives,
submitted by the Vietnam Food Administration for approval, appraised by the
Ministry of Science and Technology and promulgated by the Minister of Health
together with the Circular No. 31/2020/TT-BYT dated December 31, 2020.
NATIONAL
TECHNICAL REGULATION OF SODIUM SACCHARIN
I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Sodium saccharin.
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This Regulation applies to:
2.1. Producers and traders and users
of food additive - Sodium saccharin (hereinafter referred to as “entities”).
2.2. Relevant regulatory bodies.
3. Interpretation of terms and
acronyms
3.1. “C.A.S.” number means a
chemical substance numerical identifier assigned by Chemical Abstracts
Service - a division of America Chemical Society.
3.2. “ADI” stands for Acceptable
Daily Intake.
3.3. “INS” stands for International Numbering
System.
3.4. “TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
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5. Tests for Sodium saccharin are specified in the
Annex to this Regulation. Other tests may be applied if their equivalent
accuracy is ensured.
6. Sampling adheres to applicable
regulations.
III. REGULATORY REQUIREMENTS
7. Declaration of conformity
Entities must declare conformity by
way of adopting the product self-declaration methods as prescribed in Articles
4 and 5 of the Government’s Decree No. 15/2018/NĐ-CP dated February 02, 2018 on
elaboration of some Articles of the Law on Food Safety and Article 3 of the
Government's Decree No. 155/2018/NĐ-CP dated November 12, 2018 on amendments to
regulations relating to business conditions under state management of the
Ministry of Health.
8. Labelling
The labelling of Sodium saccharin
shall comply with the Government’s Decree No. 43/2017/NĐ-CP dated April 14,
2017 on goods labels and relevant regulations of law.
9. Inspection of Sodium saccharin
The inspection of quality and safety
of Sodium saccharin shall comply with applicable regulations of law.
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10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation.
13. The Vietnam Food Administration
shall, according to its managerial duties, suggest amendments to this
Regulation to the Ministry of Health.
14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - SODIUM SACCHARIN
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Soluble saccharin
INS 954(iv)
ADI: 0-5 mg/kg bw for saccharin
and its Ca, K, Na salts
2. Definition
Chemical names
Sodium salt dihydrate of
1,2-Benzisothiazolin-3(2H)-one-1,1-dioxide, 3-
oxo-2,3-dihydrobenzo[d]isothiazole-1,1-dioxide; sodium obenzosulfimide.
C.A.S. number
128-44-9
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C7H4NNaO3S
.2H2O
Structural formula

Formula weight
241,19
3. Description
White crystals or a white,
crystalline efflorescent powder, odourless or with a faint, aromatic odour
4. HS code
2925.11.00
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5.1. Identification
Solubility
Freely soluble in water; sparingly
soluble in ethanol
Melting range
226 ºC to 230 ºC
Derivation to salicylic acid
Passes test
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Passes test
Test for sodium
Passes test
5.2. Purity
Loss on drying
Not more than 15% (120 ºC, 4 h)
Acidity and alkalinity
Passes test
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Passes test
Readily carbonizable substances
Passes test
Toluenesulfonamides
Not more than 25 mg/kg
Selenium
Not more than 30 mg/kg
Lead
Not more than 1 mg/kg
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Not less than 99% and not more
than 101% on the dried basis
6. Tests
6.1. Identification
Solubility
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.7).
Melting range
To 10 ml of a 1 in 10 solution add
1 ml of concentrated hydrochloric acid. A crystalline precipitate of
saccharin is formed. Wash the precipitate well with cold water and dry at 105
oC for 2 h.
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Derivation to salicylic acid
Dissolve about 0.1 g of the sample
in 5 ml of 5% sodium hydroxide solution. Evaporate to dryness and gently fuse
the residue over a small flame until it no longer evolves ammonia. After the
residue has cooled, dissolve it in 20 ml of water, neutralize the solution
with dilute hydrochloric acid TS 10% (w/v) and filter.
The addition of a drop of ferric
chloride TS (FeCl3.6H2O) 9% (w/v) to the filtrate
produces a violet colour.
Derivation to fluorescent
substance
Mix 20 mg of the sample with 40 mg
of resorcinol, add 10 drops of sulfuric acid, and heat the mixture in a
liquid bath at 200º for 3 min. After cooling, add 10 ml of water and an
excess of sodium hydroxide TS (4.3 g of sodium hydroxide in 100 ml of water).
A fluorescent green liquid is produced.
Test for sodium
Determined under TCVN 6534:2010, Food
additives - Identification tests (see 4.1.10).
6.2. Purity
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Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.1), at 120ºC for 4 h.
Acidity and alkalinity
Dissolve 1 g of the sample in 10
ml of freshly boiled and cooled water. Add a drop of phenolphthalein TS
(dissolve 0.2 g of phenolphthalein in 60 ml of 90% ethanol, and dilute
to 100 ml with water). No pink colour should appear. Add a drop of
0.1 N sodium hydroxide. A pink colour should appear.
Benzoic and salicylic acid
Add ferric chloride TS (FeCl3.6H2O)
9% (w/v) dropwise to 10 ml of a hot, saturated solution of the sample. No
precipitate or violet colour appears.
Readily carbonizable substances
Dissolve 0.2 g of the sample in 5
ml of sulfuric acid TS 94.5% to 95.5% (w/v). Keep at 48 ºC to 50 ºC for 10
min. The colour should not be darker than a very light brownishyellow
(Matching Fluid A).
Matching Fluid A:
Reagents
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Dilute 25 ml of concentrated
hydrochloric acid (of a concentration 36.5% to 38 % w/v) in 975 ml of water.
2. Cobalt (II) Chloride CS:
Dissolve about 65 g of cobaltous
chloride (CoCI2.6H2O) in a sufficient quantity of
diluted hydrochloric acid and water to make 1000 ml.
Standard Cobalt(II) chloride:
Pipet 5 ml of this solution into a
250-ml flask with a flat stopper, add 5 ml of hydrogen peroxide (2.5 to 3.5%
w/v), then 15 ml of a 20 % solution of sodium hydroxide (app. 20% w/v). Boil
for 10 minutes, cool, and add 2 g of potassium iodide and 20 ml of sulphuric
acid (app. 20% w/v). After the precipitate is completely dissolved, titrate
the liberated iodine with sodium thiosulphate (0.1 N), adding 3 ml of starch
TS as indicator.
Conduct a blank titration using
the same reagents.
Each millilitre (ml) of 0.1N
sodium thiosulphate is equivalent to 23.79 mg of CoCI2.6H2O.
Adjust the final volume of the
solution by adding an adequate amount of the diluted hydrochloric acid so
that each millilitre (ml) contains 59.5 mg of CoCI2.6H2O.
3. Ferric (III) Chloride solution:
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Ferric (III) Chloride solution:
Pipet 10 ml of this solution into
a 250-ml flask with a flat stopper, add 15 ml of water, 2 g of potassium
iodide and 5 ml of sulphuric acid (36.5 to 38% w/v), and leave the mixture to
stand for 15 minutes. Dilute with 100 ml of distilled water, and titrate the
liberated iodine with 0.1N sodium thiosulphate solution, adding 3 ml of
starch TS as indicator.
Conduct a blank titration using
the same reagents.
Each millilitre (ml) of 0.1N
sodium thiosulphate is equivalent to 27.03 mg of FeCI3.6H2O.
Adjust the final volume of the
solution by adding an adequate amount of the diluted hydrochloric acid so
that each millilitre (ml) contains 45.0 mg of FeCI3.6H2O.
4. Copper (II) sulphate solution:
Dissolve about 65 g of Copper (II)
sulphate solution (CuSO4.5H2O) in a sufficient quantity
of diluted hydrochloric acid and water to make 1000 ml.
Standard Copper (II) sulphate
solution:
Pipet 10 ml of this solution into
a 250-ml flask with a flat stopper, add 40 ml of water, 4 ml of acetic acid
(of a concentration not less than 99.7% by volume), 3 g potassium iodide and
5 ml of concentrated hydrochloric acid (36.5 to 38% w/v). Titrate the
liberated iodine with sodium thiosulphate (0.1 N), adding 3 ml of starch TS
as indicator.
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Each millilitre (ml) of 0.1N
sodium thiosulphate is equivalent to 24.97 mg of CuSO4.5H2O.
Adjust the final volume of the
solution by adding an adequate amount of the diluted hydrochloric acid so
that each millilitre (ml) contains 62.4 mg of CuSO4.5H2O.
Mix matching Fluid A
Prepare a colorimetric solution
from cobalt (II) chloride solution, ferric (III) chloride solution, copper
(II) sulfate solution and water in the ratio of 0.1 : 0.4 : 0.1 : 4.4
(volume).
Toluenesulfonamides
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.16).
NOTE: The procedure uses a packed
column GC. In the absence of a packed column GC, capillary GC in the
splitless mode, using an equivalent capillary column, may be used. GC
conditions need to be established. Refer to the conditions below:
- Agilent DB-5 column (30 m x
0,25mm mm x 0,25µm µm)
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Time
(minute)
Temperature
(ºC)
Hold
time (minute)
0,0
180,0
1,0
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260,0
5,0
20,0
300,0
2,0
The retention times for o-toluene
sulfonamide, p-toluene sulfonamide and n-tricosane are about 5, 6 and 9
minutes, respectively.
Selenium
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Lead
Determined under TCVN 8900-6:2012,
Food additives. Determination of inorganic components - Part 6:
Measurement of antimony, barium, cadmium, chromium, copper, lead and zinc by
flame atomic abrsorption spectrometry; or
TCVN 8900-8:2012, Food
additives - Determination of inorganic components - Part 8: Measurement of
lead and cadmium by graphite furnace atomic absorption spectrometry.
6.3. Method of essay
Dissolve about 0.3 g of the dried
sample, accurately weighed, in 20 ml of glacial acetic acid. Add 2 drops of
1% crystal violet-glacial acetic acid TS as indicator, and titrate with 0.1 N
perchloric acid. End-point is where violet colour of the solution changes to
green, via blue. Perform a blank determination, and make any necessary
correction.
Calculate the percentage (%) of sodium
saccharin in the sample (X) according to the following formula:

Where:
V is the volume of 0.1 N
perchloric acidused for titration, in milliliters (ml);
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W is the weight of the test sample
after drying, in grams (g);
1000 is the conversion of milligrams
(mg) to grams (g).
QCVN
4-29:2020/BYT
NATIONAL
TECHNICAL REGULATION OF SUCRALOSE
Foreword
QCVN 4-29:2020/BYT is developed by
the Drafting Board for National technical regulation on food additives,
submitted by the Vietnam Food Administration for approval, appraised by the
Ministry of Science and Technology and promulgated by the Minister of Health
together with the Circular No. 31/2020/TT-BYT dated December 31, 2020.
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I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Sucralose.
2. Regulated entities
This Regulation applies to:
2.1. Producers and traders and users
of food additive - Sucralose (hereinafter referred to as “entities”).
2.2. Relevant regulatory bodies.
3. Interpretation of terms and
acronyms
3.1. “C.A.S.” number means a
chemical substance numerical identifier assigned by Chemical Abstracts
Service - a division of America Chemical Society.
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3.3. “INS” stands for International
Numbering System.
3.4. “TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications for food additive -
Sucralose are specified in the Annex to this Regulation.
5. Tests for Sucralose are specified in the Annex to
this Regulation. Other tests may be applied if their equivalent accuracy is
ensured.
6. Sampling adheres to applicable
regulations.
III. REGULATORY REQUIREMENTS
7. Declaration of conformity
Entities must declare conformity by
way of adopting the product self-declaration methods as prescribed in Articles
4 and 5 of the Government’s Decree No. 15/2018/NĐ-CP dated February 02, 2018 on
elaboration of some Articles of the Law on Food Safety and Article 3 of the
Government's Decree No. 155/2018/NĐ-CP dated November 12, 2018 on amendments to
regulations relating to business conditions under state management of the
Ministry of Health.
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The labelling of Sucralose shall
comply with the Government’s Decree No. 43/2017/NĐ-CP dated April 14, 2017 on
goods labels and relevant regulations of law.
9. Inspection of Sucralose
The inspection of quality and safety
of Sucralose shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation.
13. The Vietnam Food Administration
shall, according to its managerial duties, suggest amendments to this
Regulation to the Ministry of Health.
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Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - SUCRALOSE
1. Synonyms
4,1',6'-trichlorogalactosucrose
INS 955
ADI: 0 - 15 mg/kg bw
2. Definition
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1,6-Dichloro-1,6-dideoxy-ß-D-fructofuranosyl-4-chloro-4-deoxy-alpha-Dgalactopyranoside
C.A.S. number
56038-13-2
Chemical formula
C12H19Cl3O8
Structural formula

Formula weight
397,64
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White to off-white, practically
odourless crystalline powder
4. HS code
2940.00.00
5. Specifications
5.1. Identification
Solubility
Freely soluble in water, methanol
and ethanol; slightly soluble in ethyl acetate
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Passes test
Thin layer chromatography
Passes test
5.2. Purity
Water
Not more than 2.0% (Karl Fischer
Method)
Specific rotation
[α] 20, D: Between +84.0º and
+87.5º (10% w/v solution)
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Not more than 0.7%
Other chlorinated disaccharides
Passes test
Chlorinated monosaccharides
Passes test
Triphenylphosphine oxide
Not more than 150 mg/kg
Methanol
Not more than 0.1%
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Not more than 1 mg/kg
5.3. Assay
Not less than 98% and not more
than 102% calculated on an anhydrous basis
6. Tests
6.1. Identification
Solubility
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.7).
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The infrared spectrum of a
potassium bromide dispersion of the sample corresponds with the reference
infrared spectrum in 6.3.
Thin layer chromatography
The main spot in the test solution
has the same Rf value as that of the main spot of Standard Solution A
obtained in the test for Other chlorinated disaccharides.
6.2. Method of essay
Water
Determined under TCVN 8900-1:2012,
Food additives - Determination of inorganic components - Part 1:
Water content (Karl Fischer titrimetric method).
Specific rotation
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties (see
3.6).
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Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.3.3).
Lead
Determined under TCVN 8900-6:2012,
Food additives. Determination of inorganic components - Part 6:
Measurement of antimony, barium, cadmium, chromium, copper, lead and zinc by
flame atomic abrsorption spectrometry; or
TCVN 8900-8:2012, Food
additives - Determination of inorganic components - Part 8: Measurement of
lead and cadmium by graphite furnace atomic absorption spectrometry.
Other chlorinated disaccharides
TLC Plates:
Use reverse phase Thin-layer
chromatography plates coated with 0.20 mm layer of silica gel absorbent
(e.g., Whatman LKC18).
Mobile Phase:
Mix 7 volumes of a 5.0% w/v
aqueous solution of sodium chloride and 3 volumes of acetonitrile.
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Use 15% v/v solution of
concentrated sulfuric acid in methanol.
Standard Solutions:
Dissolve 1.0 g of sucralose
Reference Standard in 10 ml of methanol (Solution A). Dilute 0.5 ml of
Solution A with methanol to 100 ml (Solution B).
Test Solution:
Dissolve 1.0 g of sample in 10 ml
of methanol
Procedure:
Apply 5 µl each of Solution A,
Solution B and Test Solution to the bottom of the chromatographic plate. Place
the plate in a suitable chromatography chamber containing freshly prepared
Mobile Phase and allow the solvent front to ascend 15 cm. Remove the plate
from the chamber, allow it to dry and spray with Spray Reagent. Heat the
plate in an oven at 125 ºC for 10 min. The main spot in the Test Solution has
the same Rf value as the main spot in Solution A and no other spot
in the Test Solution is more intense than the 0.5% spot in Solution B.
Chlorinated monosaccharides
TLC Plates:
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Spray Reagent:
Dissolve 1.23 g p-anisidine and
1.66 g phthalic acid in 100 ml methanol.
Store the solution in darkness and
refrigerate to prevent it becoming decolourised. Discard if solution becomes
discoloured.
Note: p-anisidine is toxic by skin
absorption and inhalation and should be used with due caution.
Standard Solution A:
Dissolve 10.0 g of mannitol, weighed
to 0.001 g, in water in a 100 ml volumetric flask, and dilute to volume with
water.
Standard Solution B:
Dissolve 10 g of mannitol and 40
mg of fructose (Analar grade) in 25 ml of water in a 100 ml volumetric flask
and make up to volume with water.
Sample Solution:
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Procedure:
Spot 5 µl of each of Standard
Solutions A and B onto the TLC plate applying the solution slowly in 1 µl
aliquots and allowing the plate to dry between applications.
Spot 5 µl of the Sample Solution
onto the plate in a similar manner. The three spots should be of similar
size. Spray the plate with Spray Reagent and heat at 100 ± 2 ºC for 15 min. Immediately
after heating, view the plate against a dark background. The spot from the
Sample Solution is not more coloured than the spot from Solution B
(equivalent to a limit of 0.1% maximum total chlorinated monosaccharides).
(Darkening of the mannitol spot
from Standard Solution A indicates that the plate has been held too long in
the oven, and a second plate should be prepared).
Triphenylphosphine oxide
Chromatographic system:
Typically a high pressure liquid
chromatograph, operated at room temperature, is fitted with a radial compression
module containing a 5 µm C18 Rad Pak reverse phase column (10 cm x 8 mm). The
mobile phase is maintained at a pressure and flow rate (typically 1.5 ml/min)
capable of giving the required elution time. The chromatograph is equipped
with a UV detector (220 nm).
Mobile Phase:
Add 67 volumes of acetonitrile
(HPLC grade, far UV, filtered through a 0.45 µm Millipore filter or
equivalent) to 33 volumes of water (glass distilled, filtered through a 0.45
µm Millipore filter or equivalent). Mix and de-gas thoroughly.
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Weigh accurately 100 mg of
triphenylphosphine oxide into a 10 ml volumetric flask. Dissolve and make up
to volume using the Mobile Phase. Take 1.0 ml of the resulting solution and
make up to 100 ml with Mobile Phase. From this solution prepare a further
100-fold dilution with Mobile Phase and use this as the Standard Solution. Filter
through a 0.45 µm Millipore filter or equivalent.
Test Solution:
Weigh accurately about 100 mg of
sample into a 10 ml volumetric flask. Dissolve and make up to volume using
the Mobile Phase. Filter through a 0.45 µm Millipore filter or equivalent. Record
the weight of sample as Wt (mg).
Procedure:
Inject duplicate 25 µl portions of
the Standard and Test Solutions into the chromatograph. Under the conditions
stated above the retention time for triphenylphosphine oxide is 6 min. Record
the mean peak areas for the Standard and Test Solutions as As and
At respectively. Calculate the concentration of triphenylphosphine
oxide (TPPO) in the sample from the following formula:
TPPO
mg/kg = At/As x
1000/Wt
Methanol
Apparatus:
Use a suitable gas chromatograph
equipped with a hydrogen flame ionization detector containing a 2.1 m x 4.0
mm (id) glass column packed with Porapak PS 80-100 mesh or equivalent materials.
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The operating conditions may vary
depending upon the particular instrument used but a suitable chromatogram may
be obtained by using the following conditions:
- Column temperature: 150o
(isothermal)
- Inlet temperature: 200 ºC
- Detector temperature: 250 ºC
- Carrier gas nitrogen:20 ml/min
Standard Solution:
Pipet 2.0 ml of methanol into a
100-ml volumetric flask, dilute to volume with pyridine, and mix. Transfer
1.0 ml of this solution to a 100-ml volumetric flask, dilute to volume with
pyridine, and mix.
Sample Solution:
Weigh accurately about 2 g of the
sample into a 10-ml volumetric flask, dilute to volume with pyridine, and
mix.
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Inject a 1-µl portion of the
Standard Solution onto a gas chromatography column, obtain the chromatogram,
and measure the area of the peak produced. The relative standard deviation
for replicate injections is not more than 2.0%. Calculate the mean peak areas
for the Standard Solution. Similarly, inject a 1-µl portion of the Sample
Solution into the gas chromatograph, and measure the areas of the peaks
produced by methanol. Calculate the mean peak areas, and determine the
methanol concentration using the following formula:

Where:
SA = the sample area
CS = the concentration
of methanol in the standard in percent (volume of methanol X dilution factor
X density of solvent equals 2 X 10-4 X 0.79 X 100)
VS = the volume of the
Sample Solution
AS = the standard area
WS = the weight of the
sample
NOTE: The procedure uses a packed
column GC. In the absence of a packed column GC, capillary GC in the
splitless mode, using an equivalent capillary column, may be used. GC
conditions need to be established.
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Chromatographic system:
Fit a high pressure liquid
chromatograph, operated at room temperature, with a radial compression module
containing a 10 cm 5 µm C18 reverse phase column. The mobile phase is
maintained at a pressure and flow rate (typically 1.5 ml/min) capable of
giving the required elution time (see System Suitability Test). An
ultraviolet detector that monitors absorption at 190 nm, or a refractive
index detector, is used.
Mobile Phase:
Add 150 ml of acetonitrile (HPLC
grade, far UV, filtered through a 0.45 µm Millipore filter or equivalent) to
850 ml of water (glass distilled, filtered through a 0.45 µm Millipore filter
or equivalent). Mix and de-gas thoroughly.
Standard Solution:
Weigh accurately about 250 mg of
sucralose Reference Standard into a 25 ml volumetric flask. Dissolve and make
up to volume using the Mobile Phase. Filter the solution through a 0.45 µm
Millipore filter or equivalent. Record the weight of Reference Standard as Ws.
Test Solution:
Weigh accurately about 250 mg of
sample into a 25 ml volumetric flask. Dissolve and make up to volume using
the Mobile Phase. Filter the solution through a 0.45 µm Millipore filter or
equivalent. Record the weight of sample as Wt.
System Suitability Test:
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NOTE: The retention time quoted is
appropriate for a 10 cm 5 µm Rad-Pak C18 column. If a column of a different
make or length is used it may be necessary to adjust the proportion of
acetonitrile in the eluent to obtain the required retention time). The
co-efficient of variation (100 x standard deviation divided by mean peak
area) for the peak areas should not exceed 2%.
Procedure:
Analyse the Test Solution under
the conditions described above, making duplicate 20 µl injections, and calculate
the mean peak area. Calculate the percentage purity from the relative peak
areas of the Test (At) and Standard (As) Solutions according to the following
formula:

Calculate the percentage purity on
a water-free and methanol-free basis using the values obtained in the tests
for water and methanol.
6.4. Infrared spectrum

QCVN
4-30:2020/BYT
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Foreword
QCVN 4-30:2020/BYT is developed by
the Drafting Board for National technical regulation on food additives, submitted
by the Vietnam Food Administration for approval, appraised by the Ministry of
Science and Technology and promulgated by the Minister of Health together with
the Circular No. 31/2020/TT-BYT dated December 31, 2020.
NATIONAL
TECHNICAL REGULATION OF ALITAME
I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Alitame.
2. Regulated entities
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2.1. Producers and traders and users
of food additive - Alitame (hereinafter referred to as “entities”).
2.2. Relevant regulatory bodies.
3. Interpretation of terms and
acronyms
3.1. “C.A.S.” number means a
chemical substance numerical identifier assigned by Chemical Abstracts
Service - a division of America Chemical Society.
3.2. “ADI” stands for Acceptable
Daily Intake.
3.3. “INS” stands for International
Numbering System.
3.4. “TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications for food additive -
Alitame are specified in the Annex to this Regulation.
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6. Sampling adheres to applicable
regulations.
III. REGULATORY REQUIREMENTS
7. Declaration of conformity
Entities must declare conformity by
way of adopting the product self-declaration methods as prescribed in Articles
4 and 5 of the Government’s Decree No. 15/2018/NĐ-CP dated February 02, 2018 on
elaboration of some Articles of the Law on Food Safety and Article 3 of the
Government's Decree No. 155/2018/NĐ-CP dated November 12, 2018 on amendments to
regulations relating to business conditions under state management of the
Ministry of Health.
8. Labelling
The labelling of Alitame shall
comply with the Government’s Decree No. 43/2017/NĐ-CP dated April 14, 2017 on
goods labels and relevant regulations of law.
9. Inspection of Alitame
The inspection of quality and safety
of Alitame shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
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11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation.
13. The Vietnam Food Administration
shall, according to its managerial duties, suggest amendments to this
Regulation to the Ministry of Health.
14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - ALITAME
1. Synonyms
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ADI: 0 - 1 mg/kg bw
2. Definition
Alitame is prepared by a multistep
synthesis involving the reaction between two intermediates, (S)-[2,5-dioxo-(4-thiazolidine)]
acetic acid and (R)-2-aminoN-(2,2,4,4-tetramethyl-3-thietanyl)propanamide. The
final product is isolated and purified through crystallization of an
alitame/4-methylbenzenesulfonic acid adduct followed by additional purification
steps, and finally recrystallization from water as the 2.5 hydrate.
Chemical names
L-α-Aspartyl-N-(2,2,4,4-tetramethyl-3-thietanyl)-D-alaninamid,
hydrated
C.A.S. number
99016-42-9 (hydrated form)
80863-62-3 (anhydrous form)
Chemical formula
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Structural formula

Formula weight
376.5 (hydrated form)
3. Description
White, crystalline powder,
odourless or having a slight characteristic odour. Approximately 2000 times
sweeter than sucrose.
4. HS code
2934
5. Specifications
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5.1. Identification
Solubility
Freely soluble in water and in
ethanol
Infrared spectrum
The infrared spectrum of a
potassium bromide dispersion of the sample corresponds with the reference
infrared spectrum in 6.4
pH
Between 5.0 and 6.0 (5 in 100
soln)
Colour reactions
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5.2. Purity
Beta isomer
Not more than 0.3%, calculated on
the anhydrous basis
Alanine amide
Not more than 0.2%, calculated on
the anhydrous basis
Water
Between 11 and 13% (Karl Fischer
method)
Specific rotation
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Sulfated ash
Not more than 1.0%
Lead
Not more than 1 mg/kg
5.3. Assay
Not less than 98.0% and not more
than 101.0% on the anhydrous basis
6. Tests
6.1. Identification
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Solubility
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.7).
pH
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.8).
Colour reactions
To 5 ml of a solution of 300 mg of
ninhydrin in 100 ml of n-butanol and 2 ml of glacial acetic acid, add 10 mg
of the sample, and heat to gentle reflux. An intense blue-violet colour is
formed.
To 5 ml of a freshly prepared
0.001 mol/l potassium permanganate solution add 10 mg of the sample and mix
thoroughly. The purple solution changes to brown.
6.2. Purity
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Determined under TCVN 8900-1:2012,
Food additives - Determination of inorganic components - Part 1: Water
content (Karl Fischer titrimetric method)
Specific rotation
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.6).
Sulfated ash
Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.3.3).
Lead
Determined under TCVN 8900-6:2012,
Food additives. Determination of inorganic components - Part 6:
Measurement of antimony, barium, cadmium, chromium, copper, lead and zinc by
flame atomic abrsorption spectrometry; or
TCVN 8900-8:2012, Food
additives - Determination of inorganic components - Part 8: Measurement of
lead and cadmium by graphite furnace atomic absorption spectrometry.
6.3. Method of essay
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Principle
Alitame and its constituents, the
beta isomer and alanine amide, are measured by reverse-phase ion-pair HPLC.
Chromatographic System
Fit a high pressure liquid
chromatograph, operated at room temperature, with a constant flow pump and a
15 x 0.4 cm NovaPak C18 reverse phase ion-pair column (Waters, or
equivalent). The mobile phase is maintained at a pressure and flow rate
(typically 1.0 ml/min) capable of giving the required elution time. An
ultraviolet detector that monitors absorption at 217 nm is used.
Mobile Phase
To make the buffer solution, add
0.69 g of sodium phosphate, monobasic, monohydrate and 4.32 g sodium
1-octanesulfonate, reagent grade to a 1000-ml volumetric flask. Add 200 ml of
water, stir to dissolve the salts and adjust the pH to 2.5 with phosphoric
acid (85%, reagent grade). Add water to volume. Filter through 0.22 µm
Millipore filter or equivalent. Accurately measure one part by volume of
acetonitrile (LC grade, transmittance more than 90% at 210 nm) and three
parts by volume of buffer solution, and combine. De-gas under vacuum.
Standard Solution A1:
Weigh accurately about 25 mg each
of the beta isomer and alanine amide, and transfer quantitatively to a 500 ml
volumetric flask. Add 50 ml methanol to aid dissolution, and dilute with
water to volume. Store in a refrigerator.
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Transfer 15.0 ml of Standard
Solution A1 into a 50 ml volumetric flask and dilute with water to volume.
Working Standard W1
Weigh accurately about 50 mg
Alitame Reference Standard, transfer quantitatively to a 10 ml volumetric
flask, add 5 ml of Standard Solution A2, and dilute with water to volume.
Working Standard W2
Transfer 5.0 ml of Working
Standard W1 to a 50 ml volumetric flask and dilute with water to volume.
Test Solution S1
Weigh accurately about 50 mg of
the sample, transfer quantitatively to a 10 ml volumetric flask and dilute
with water to volume.
Test Solution S2
Transfer 5.0 ml of Test Solution
S1 to a 50 ml volumetric flask and dilute with water to volume.
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Inject triplicate 100 µl portions
of Working Standards W1 and W2 into the chromatograph. The retention times
for the beta isomer, alitame, and alanine amide should be approximately 6,
10, and 15 min respectively. (Note: The retention time quoted is appropriate
for a 150 x 4.0 mm NovaPak column. If a column of a different make or length
is used, it may be necessary to adjust the proportion of acetonitrile in the
eluent to obtain the required retention time). The coefficient of variation
(100 x standard deviation divided by mean peak area) for the peak areas
should not exceed 2%.
Procedure
Equilibrate the column by pumping
mobile phase through it until a drift-free baseline is obtained. Analyze the
Standard Solutions and Test Solutions under the conditions described above. Inject
three replicate samples of Working Standard W1, and calculate the average
peak areas for the beta isomer and for alanine amide. Inject three replicate
samples of Working Standard W2, and calculate the average peak areas for the
beta isomer and for alanine amide. Inject three replicate samples of Test Solution S1 and
calculate the average peak areas for the beta isomer and alanine amide. Inject
three replicate samples of Test Solution S2 and calculate the average peak
area for alitame.
Calculate the purity of alitame by
the formula:

Where:
RA = the response of
the analyte peak in Test Solution S2
WS = the weight of the
alitame Reference Standard corrected for water content, in g
PS = the percent purity
of the Reference Standard, i.e., 100.00 - sum of impurities
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WA = the weight of the
sample corrected for the water content, in g.
Calculate the percentage of the
beta isomer and alanine amide by the following formula:

Where:
RA = the response of
the analyte peak in Test Solution S1
WS = the weight of the
beta isomer or alanine amide standards, uncorrected for water content, in g
PS = the percentage
purity of the beta isomer or alanine amide standard, i.e. 100.00 - sum of
impurities
RS = the response of
the analyte peak in Working Standard W1
WA = the weight of the
sample, uncorrected for water content, in g
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Note: in case only Alitame
Reference Standard is used, proceed with the analyses of the test samples
under the abovementioned conditions. If only the peak of Alitame appears in
the chromatogram of the test sample before the 20-minute mark, then it can be
considered that the analyzed sample does not contain beta isomer and alanine
amide.
6.4. Infrared spectra of Alitame

QCVN
4-31:2020/BYT
NATIONAL
TECHNICAL REGULATION OF ASPARTAME-ACESULFAME SALT
Foreword
QCVN 4-31:2020/BYT is developed by
the Drafting Board for National technical regulation on food additives,
submitted by the Vietnam Food Administration for approval, appraised by the
Ministry of Science and Technology and promulgated by the Minister of Health
together with the Circular No. 31/2020/TT-BYT dated December 31, 2020.
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NATIONAL
TECHNICAL REGULATION OF ASPARTAME-ACESULFAME SALT
I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Aspartame-Acesulfame Salt.
2. Regulated entities
This Regulation applies to:
2.1. Producers and traders and users
of food additive - Aspartame-Acesulfame Salt (hereinafter referred to as
“entities”).
2.2. Relevant regulatory bodies.
3. Interpretation of terms and
acronyms
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3.2. “ADI” stands for Acceptable
Daily Intake.
3.3. “INS” stands for International
Numbering System.
3.4. “TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications for food additive -
Aspartame-Acesulfame Salt are specified in the Annex to this Regulation.
5. Tests for Aspartame-Acesulfame Salt are specified
in the Annex to this Regulation. Other tests may be applied if their equivalent
accuracy is ensured.
6. Sampling adheres to applicable
regulations.
III. REGULATORY REQUIREMENTS
7. Declaration of conformity
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8. Labelling
The labelling of
Aspartame-Acesulfame Salt shall comply with the Government’s Decree No.
43/2017/NĐ-CP dated April 14, 2017 on goods labels and relevant regulations of
law.
9. Inspection of Aspartame-Acesulfame
Salt
The inspection of quality and safety
of Aspartame-Acesulfame Salt shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation.
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14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - ASPARTAME-ACESULFAME SALT
1. Synonyms
Aspartame-Acesulfame
INS 962
ADI: 0 - 40 mg/kg bw for aspartame
and 0 - 15 mg/kg for acesulfame K
2. Definition
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Chemical names
6-methyl-1,2,3-oxathiazine-4(3H)-one-2,2-dioxide
salt of L-phenylalanyl2-methyl-L-α-aspartic acid.
[2-carboxy-β-(N-(b-methoxycarbonyl-2-
phenyl)ethylcarbamoyl)]ethanaminium-6-methyl-4-oxo-1,2,3-oxathiazin3-ide-2,2-dioxide.
C.A.S. number
106372-55-8
Chemical formula
C18H23O9N3S
Structural formula

Formula weight
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3. Description
A white, odourless, crystalline
powder
4. HS code
2924.29.10
5. Specifications
5.1. Identification
Solubility
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5.2. Purity
Loss on drying
No more than 0.5% (105 °C, 4 h)
Transmittance
The transmittance of a 1% solution
in water determined in a 1 cm cell at 430 nm with a suitable
spectrophotometer using water as a reference, is not less than 0.95,
equivalent to an absorbance of not more than approximately 0.022.
Specific rotation
[α] 20, D: +14.5º to +16.5º.
5-Benzyl-3,6-dioxo- 2- piperazine
acetic acid
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Lead
Not more than 1 mg/kg
5.3. Assay
63.0% to 66.0% aspartame (dried
basis) and 34.0% to 37.0% acesulfame (acid form on a dried basis).
6. Tests
6.1. Identification
Solubility
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6.2. Purity
Loss on drying
Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.1), at 105ºC for 4 h.
Specific rotation
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.6).
After preparing a solution of 6.2
g of sample in 100 ml formic acid (15N), make the measurement within 30 min
of preparation of the solution. Divide the calculated specific rotation by
0.646 to correct for the aspartame content of the aspartame-acesulfame salt.
Lead
Determined under TCVN 8900-6:2012,
Food additives. Determination of inorganic components - Part 6:
Measurement of antimony, barium, cadmium, chromium, copper, lead and zinc by
flame atomic abrsorption spectrometry; or
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5-Benzyl-3,6-dioxo-2-
piperazineacetic acid
Principle
5-benzyl-3,6-dioxo- 2-piperazine
acetic acid is determined in aspartameacesulfame salt dissolved in
methanol-water by comparison to an authentic standard after separation by
HPLC.
Mobile Phase
Dissolve 5.6 g of potassium
phosphate monobasic into 820 ml of water in a 1-l flask and adjust the pH to
4.3 with phosphoric acid. Add 180 ml of methanol and mix. Filter through a
0.45 µm filter and de-gas.
Standard
Accurately weigh approximately 25
mg of authentic 5-benzyl-3,6-dioxo2-piperazine acetic acid into a 100-ml
volumetric flask; add 10 ml of methanol to dissolve the material and dilute
to volume with water and mix. Accurately transfer 15 ml of this solution to a
50-ml flask and dilute to volume with a 1:9 (v:v) mixture of methanol:water
prepared on the day of use.
Apparatus:
Use a suitable high-pressure liquid
chromatograph equipped with UV detector for measuring absorbance at 210 nm
and a 250 x 4.6 mm column packed with octyldecyl silanized silica (10-µm
Partisil ODS-3 or equivalent) and operated under isocratic conditions at
40°C.
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Accurately weigh approximately 50
mg of sample into a 10 ml volumetric flask and dilute to volume with a 1:9
(v:v) mixture of methanol:water prepared on the day of use.
Procedure
Separately inject 20 µl portions
of the standard and the sample into the chromatograph. The flow rate of the
mobile phase is about 2 ml/min. Record the peak areas in standard and sample
chromatograms (under the conditions described, the retention time of
5-benzyl-3,6-dioxo2-piperazine acetic acid and aspartame are approximately 4
and 11 min, respectively).
Measure the peak area response of
5-benzyl-3,6-dioxo- 2- piperazine acetic acid in each chromatogram.
Calculation
Calculate the percentage of
5-benzyl-3,6-dioxo-2-piperazine acetic acid as follows:
% =
1000(AU x CS)/(AS x WU)
Where:
AU and AS are
the peak areas of 5-benzyl-3,6-dioxo-2-piperazine acetic acid in the sample
and standard, respectively;
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Wu is the weight, in
mg, of aspartame-acesulfame salt taken in the sample preparation.
6.3. Method of essay
Principle
Aspartame-acesulfame salt is
dissolved in methanol and potentiometrically titrated with tetrabutylammonium
hydroxide.
Standard tetrabutylammonium
hydroxide solution
- Prepare a 0.1 M solution in a
1:1 (v:v) mixture of 2-propanol:methanol.
Weigh 24 and 98 mg benzoic acid
with 0.01 mg accuracy and dissolve each into two 50-ml volumetric flasks and
dilute to volume with 2- propanol.
Titrate both solutions with the
0.1 M tetrabutylammonium hydroxide and record the volume required to reach
the equivalence point with 0.001 ml accuracy. Perform a blank titration on 50
ml of 2- propanol. Determine the standard factor (F) for each titration. and
average the two factors as follows:
F = [(WS x 1000)/(122 x (VS - V0))]
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WS = weight of primary
benzoic acid (g);
VS = volume of 0.1M
tetrabutylammonium hydroxide used to titrate benzoic acid, in milliliters
(ml);
V0 = volume of 0.1M
tetrabutylammonium hydroxide used to tiltrate the blank sample, in milliliters
(ml);
122 = molecular weight of benzoic
acid.
Apparatus:
Use a suitable autotitrator (e.g.,
Metrohm 670) equipped with a glass pH electrode (e.g., Yokogawa pH electrode
SM 21-AL4) and a silver-silver chloride double liquid junction reference
electrode (e.g., SR 20-AS521)).
Procedure
Weigh accurately 100 to 150 mg of
sample and dissolve it in 50-ml methanol. Titrate with the standardized 0.1 M
tetrabutylammonium hydroxide. Determine the volume (ml) of the standard
solution needed to reach the first and second equivalency points.
Perform a blank titration on the
methanol.
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Acesulfame content:
% = [(V1 - VB) x N x 163/(10 x W)]
Aspartame content:
% = [(V2 - V1) x N x 294/(10 x W)]
Where:
V1 = volume of 0.1M
tetrabutylammonium hydroxide used for titration in the first equivalency
point, in milliliters (ml);
V2 = volume of 0.1M
tetrabutylammonium hydroxide used for titration in the second equivalency
point, in milliliters (ml);
VB = volume of 0.1M
tetrabutylammonium hydroxide used for titration in the equivalency point of
blank, in milliliters (ml);
N = normality of the standard 0.1
M tetrabutylammonium hydroxide;
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10 = conversion of grams (g) to
percentage (%) (m/m);
W = weight of the test sample,
calculated on the anhydrous basis, in grams (g).
QCVN
4-32:2020/BYT
NATIONAL
TECHNICAL REGULATION OF POLYGLYCITOL SYRUP
Foreword
QCVN 4-32:2020/BYT is developed by
the Drafting Board for National technical regulation on food additives,
submitted by the Vietnam Food Administration for approval, appraised by the
Ministry of Science and Technology and promulgated by the Minister of Health
together with the Circular No. 31/2020/TT-BYT dated December 31, 2020.
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I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for food additive - Polyglycitol Syrup.
2. Regulated entities
This Regulation applies to:
2.1. Producers and traders and users
of food additive - Polyglycitol Syrup (hereinafter referred to as “entities”).
2.2. Relevant regulatory bodies.
3. Interpretation of terms and
acronyms
3.1. “ADI” stands for Acceptable
Daily Intake.
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3.3. “TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications for food additive -
Polyglycitol Syrup are specified in the Annex to this Regulation.
5. Tests for Polyglycitol Syrup are specified in the
Annex to this Regulation. Other tests may be applied if their equivalent
accuracy is ensured.
6. Sampling adheres to applicable
regulations.
III. REGULATORY REQUIREMENTS
7. Declaration of conformity
Entities must declare conformity by
way of adopting the product self-declaration methods as prescribed in Articles
4 and 5 of the Government’s Decree No. 15/2018/NĐ-CP dated February 02, 2018 on
elaboration of some Articles of the Law on Food Safety and Article 3 of the
Government's Decree No. 155/2018/NĐ-CP dated November 12, 2018 on amendments to
regulations relating to business conditions under state management of the
Ministry of Health.
8. Labelling
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9. Inspection of Polyglycitol Syrup
The inspection of quality and safety
of Polyglycitol Syrup shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
V. IMPLEMENTATION
12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation.
13. The Vietnam Food Administration
shall, according to its managerial duties, suggest amendments to this
Regulation to the Ministry of Health.
14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
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Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - POLYGLYCITOL SYRUP
1. Synonyms
Hydrogenated starch hydrolysate,
polyglucitol
INS 964
ADI: Not applicable
2. Definition
A mixture consisting mainly of
maltitol and sorbitol and lesser amounts of hydrogenated oligo and
polysaccharides and maltrotriitol. Manufactured by the catalytic
hydrogenation of a mixture consisting of glucose, maltose, and higher glucose
polymers; typically supplied as a syrup; may also be dried and supplied as a
solid product.
3. Description
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4. HS code
1702.20.00
5. Specifications
5.1. Identification
Solubility
Very soluble in water; slightly
soluble in ethanol
Test for maltitol
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Test for sorbitol
Passes test
5.2. Purity
Water
Not more than 31% (Karl Fischer
Method)
Sulfated ash
Not more than 0.1%
Chlorides
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Sulfates
Not more than 100 mg/kg
Nickel
Not more than 2 mg/kg
Reducing sugars
Not more than 0.3%
Lead
Not more than 1 mg/kg
5.3. Assay
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6. Tests
6.1. Identification
Solubility
Determined under TCVN 6469:2010, Food
additives - Methods for evaluating appearance and physical properties
(see 3.7).
Test for maltitol
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.10).
Standard solution: Dissolve 50 mg
of reference standard maltitol in 20 ml water.
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Test for sorbitol
To 5 g of the sample add 7 ml of
methanol, 1 ml of benzaldehyde, and 1 ml of hydrochloric acid. Mix and shake
in a mechanical shaker until crystals appear. Filter the crystals and
dissolve in 20 ml of boiling water containing 1 g of sodium bicarbonate. Filter
the hot solution and allow to cool until crystals are formed. Filter the
crystals, wash with 5 ml of a water-methanol mixture (1 in 2), and dry in
air. The crystals of the monobenzylidine derivative of sorbitol so obtained
melt between 173 ºC and 179 ºC.
6.2. Purity
Water
Determined under TCVN 8900-1:2012,
Food additives - Determination of inorganic components - Part 1: Water
content (Karl Fischer titrimetric method).
Sulfated ash
Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.3.3), test 3 g of the sample (Method I)
Chlorides
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Test 10 g of sample using 1.5 ml
of 0.01N hydrochloric acid in the control.
Sulfates
Determined under TCVN 8900-5:2012,
Food additives - Determination of inorganic components - Part 5: Limit
tests (section 2.9).
Test 10 g of sample using 2.0 ml
of 0.01N sulfuric acid in the control.
Nickel
Reagents
- 1 N acetic acid.
- 1% (w/v) solution of ammonium
pyrolidinedithiocarbamate solution.
- Methyl isobutyl ketone
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- Working Standard:
Add 0.5 ml, 1.0 ml, and 1.5 ml,
respectively, of a standard nickel solution containing 10 mg/kg to a mixture
of 1 N acetic acid solution and water (1:1) in a glass flask and dilute to
100 ml. Add 2.0 ml of a 1% w/v solution of ammonium
pyrrolidinedithiocarbamate and 10 ml of methyl isobutyl ketone. Mix and allow
the layers to separate and use the methylisobutyl ketone layer.
Apparatus
- Atomic absorption spectrometer
equipped with a nickel hollow cathode lamp and an air–acetylene flame,
capable of measuring the absorbances at 232.0 nm
- Analytical balance with a
readability of 1 mg
- Pipette
- 100 ml volumetric flask
Procedure
- Prepare sample solution
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- Prepare blank solution
Prepare in the same manner as the
Sample solution, but omit the sample.
- Prepare a standard curve
Determine the absorbances at 232.0
nm of each of the Standard solutions at least three times each, and record
the average of the steady readings for each. Prepare a standard curve by
plotting the mean absorbances vs concentration for the Standard solutions.
- Determine concentration of
nickel
Zero the instrument with the Blank
solution. Determine the absorbances at 232.0 nm of each of the Sample
solutions at least three times each, and record the average of the steady
readings for each. Between each measurement, aspirate the Blank solution, and
ascertain that the reading returns to its initial blank value.
Calculate the concentration of
nickel in the Sample solution from the absorbances at 232.0 nm of the sample
solution, using a standard curve.
Reducing sugars
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.13.2).
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Lead
Determined under TCVN 8900-6:2012,
Food additives. Determination of inorganic components - Part 6:
Measurement of antimony, barium, cadmium, chromium, copper, lead and zinc by
flame atomic abrsorption spectrometry; or
TCVN 8900-8:2012, Food
additives - Determination of inorganic components - Part 8: Measurement of
lead and cadmium by graphite furnace atomic absorption spectrometry.
6.3. Method of essay
Total hydrogenated saccharides (%)

Determine the maltitol and
sorbitol content
Apparatus:
- Liquid chromatograph (HPLC);
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- Eluent: Double distilled
degassed water (filtered through Millipore membrane filter or equivalent,
0.45 µm).
- Chromatographic conditions
Column temperature: 85 ºC ± 0.5
ºC;
Eluent flow rate: 0.5 ml/min
Reagents
Standard preparation: Dissolve
accurately weighed quantities of standard reference maltitol and sorbitol in
water to obtain a solution having known concentration of about 10.0 mg of
maltitol and 5.0 mg of sorbitol per ml.
Sample preparation: Transfer about
1 g of the sample accurately weighed to a 50-ml volumetric flask, dilute with
water to volume and mix.
Procedure:
Separately inject equal volumes
(about 20 µl) of the sample preparation and the standard preparation into the
chromatograph. Record the chromatograms and measure the responses of each
peak.
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Calculate separately the
quantities, in mg, of maltitol and sorbitol in the portion of syrup taken by
the following formula:

Where:
C = the concentration, in mg per
ml, of the corresponding maltitol and sorbitol in the standard preparation;
RU = the peak response
of the sample preparation;
RS = the peak response
of the standard preparation.
QCVN
4-33:2020/BYT
NATIONAL
TECHNICAL REGULATION OF SORBITOL SYRUP
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Foreword
QCVN 4-33:2020/BYT is developed by
the Drafting Board for National technical regulation on food additives,
submitted by the Vietnam Food Administration for approval, appraised by the
Ministry of Science and Technology and promulgated by the Minister of Health
together with the Circular No. 31/2020/TT-BYT dated December 31, 2020.
NATIONAL
TECHNICAL REGULATION OF SORBITOL SYRUP
I. GENERAL
1. Scope
This National technical regulation
(hereinafter referred to as “the Regulation”) provides for specifications and
regulatory requirements for sorbitol syrup.
2. Regulated entities
This Regulation applies to:
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2.2. Relevant regulatory bodies.
3. Interpretation of terms and
acronyms
3.1. “ADI” stands for Acceptable
daily intake
3.2. “INS” stands for international
numbering system.
3.3. "TCVN” indicates National
Standard.
II. SPECIFICATIONS, TESTS AND
SAMPLING
4. Specifications for food additive -
sorbitol syrup are specified in the Annex to this Regulation.
5. Tests for sorbitol syrup are specified in the Annex
to this Regulation. Other tests may be applied if their equivalent accuracy is
ensured.
6. Sampling adheres to applicable
regulations.
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7. Declaration of conformity
Entities must declare conformity by
way of adopting the product self-declaration methods as prescribed in Articles
4 and 5 of the Government’s Decree No. 15/2018/ND-CP dated February 02, 2018 on
elaboration of some Articles of the Law on Food Safety and Article 3 of the
Government's Decree No. 155/2018/ND-CP dated November 12, 2018 on amendments to
regulations relating to business conditions under state management of the
Ministry of Health.
8. Labelling
The labelling of sorbitol syrup
shall comply with the Government’s Decree No. 43/2017/ND-CP dated April 14,
2017 on goods labels and relevant regulations of law.
9. Inspection of sorbitol syrup
The inspection of quality and safety
of sorbitol syrup shall comply with applicable regulations of law.
IV. RESPONSIBILITIES OF ENTITIES
10. Entities shall assume responsibility for their
products and ensure that the products meet the specifications specified in this
Regulation and applicable regulations of law.
11. Entities shall declare conformity as
prescribed in Article 7 of this Regulation.
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12. The Vietnam Food Administration is
assigned to preside over and cooperate with competent authorities to provide
guidelines for and organize the implementation of this Regulation
13. The Vietnam Food Administration
shall, according to its managerial duties, suggest amendments to this Regulation
to the Ministry of Health.
14. In the cases where any of tests and
regulations of law referred to in this Regulation is amended or replaced, the
newest one shall apply.
Annex
SPECIFICATIONS
AND TESTS FOR FOOD ADDITIVE - SORBITOL SYRUP
1. Synonyms
D-Glucitol syrup, 420(ii)
2. Definition
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The part of the product which is
not D-sorbitol is composed mainly of hydrogenated oligosaccharides formed by
the hydrogenation of glucose syrup used as raw material (in which case the
syrup is non-crystallizing) or mannitol; minor quantities of hydrogenated
di-, tri- and tetrasaccharides may be present.
3. Description
Clear colourless aqueous solution
4. HS code
2905.44.00
5. Specifications
5.1. Identification
Solubility
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Thin layer chromatography
Passes test
5.2. Purity
Water
Not more than 31% (Karl Fischer
Method)
Sulfated ash
Not more than 0.1%
Chlorides
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Sulfates
Not more than 100 mg/kg
Nickel
Not more than 2 mg/kg
Reducing sugars
Not more than 0.3%
Lead
Not more than 1 mg/kg
5.3. Assay
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6. Tests
6.1. Identification
Solubility
Determined under TCVN 6469:2010, Food additives - Methods for
evaluating appearance and physical properties (see 3.7).
Thin layer chromatography
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (see 2.10).
Standard solution: Dissolve 50 mg
of reference standard sorbitol in 20 ml of water;
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6.2. Purity
Water
Determined under TCVN 8900-1:2012,
Food additives - Determination of inorganic components - Part 1:
Water content (Karl Fischer titrimetric method).
Sulfated ash
Determined under TCVN 8900-2:2012,
Food additives - Determination of inorganic components - Part 2: Loss
on drying, ash, water-insoluble matter and acid-insoluble matter
contents (see 5.3.3). Test 3 g of sample (Method I).
Chlorides
Determined under TCVN 8900-5:2012,
Food additives - Determination of inorganic components - Part 5: Limit
tests (section 2.3).
Test 10 g of sample by the Limit
Test using 1.5 ml of 0.01N hydrochloric acid in the control.
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Determined under TCVN 8900-5:2012,
Food additives - Determination of inorganic components - Part 5: Limit
tests (section 2.9).
Test 10 g of sample by the Limit Test
using 2.0 ml of 0.01N sulfuric acid in the control.
Nickel
Reagents
- 1 N acetic acid
- 1% (w/v) solution of ammonium
pyrolidinedithiocarbamate solution.
- Methyl isobutyl ketone
- Standard nickel solution: 10
mg/kg
- Standard solution:
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Add 2.0 ml of a 1% solution of
ammonium pyrrolidinedithiocarbamate and 10 ml of methyl isobutyl ketone. Mix
and allow the layers to separate and use the methylisobutyl ketone layer.
Apparatus
- Atomic absorption spectrometer
equipped with a nickel hollow cathode lamp and an air–acetylene flame,
capable of measuring the absorbances at 232.0 nm
- Analytical balance with a
readability of 1 mg
- Pipette
- 100 ml volumetric flask
Procedure
- Prepare sample solution
Add 20.0 g of the sample to an 100
ml volumetric flask, dissolve it with the mixture of 1 N acetic acid solution
and water (1:1) and dilute with the same mixture to the graduation mark.
Add 2.0 ml of a 1% solution of ammonium pyrrolidinedithiocarbamate and 10 ml
of methyl isobutyl ketone. Mix and allow the layers to separate and use the
methylisobutyl ketone layer.
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Prepare in the same manner as the
Sample solution, but omit the sample.
- Prepare a standard curve
Determine the absorbances at 232.0
nm of each of the Standard solutions at least three times each, and record
the average of the steady readings for each. Prepare a standard curve by
plotting the mean absorbances vs concentration for the Standard solutions.
- Determine concentration of
nickel
Zero the instrument with the Blank
solution. Determine the absorbances at 232.0 nm of each of the Sample solutions
at least three times each, and record the average of the steady readings for
each. Between each measurement, aspirate the Blank solution, and ascertain
that the reading returns to its initial blank value.
Calculate the concentration of
nickel in the Sample solution from the absorbances at 232.0 nm of the sample
solution, using a standard curve.
Reducing sugars
Determined under TCVN 9052:2012, Food
additives - Determination of organic components (section 2.13.2).
The weight of copper(I) oxide shall
not exceed 50 mg.
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Determined under TCVN 8900-6:2012, Food additives - Determination of
inorganic components - Part 6: Measurement of antimony, barium, cadmium,
chromium, copper, lead and zinc by flame atomic absorption spectrometry; or
TCVN 8900-8:2012, Food
additives - Determination of inorganic components - Part 8: Measurement of
lead and cadmium by graphite furnace atomic absorption spectrometry.
6.3. Method of essay
Total hydrogenated saccharides (%)

Determine the sorbitol content of
the sample
Apparatus
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- Detection: differential
refractometer maintained at constant temperature;
- Integrator recorder;
- Column: AMINEX HPX 87 C (or
equivalent resin in calcium form), length 30 cm, internal diameter 9 mm;
- Eluent: double distilled
degassed water (filtered through Millipore membrane filter 0.45 mm).
Chromatographic conditions
Column temperature: 85 ºC ± 0.5
ºC
Eluent flow rate: 0.5 ml/min
Reagents
Standard solution: Dissolve an
accurately weighed quantity of sorbitol in water to obtain a solution having
known concentration of about 10.0 mg of sorbitol per ml.
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Procedure
Separately inject equal volumes
(about 20 µl) of the sample preparation and the standard preparation into the
chromatograph. Record the chromatograms and measure the responses of each
polyol peak.
Calculation
Calculate separately the quantity,
in mg, of sorbitol in the portion of sample taken by the following formula:

Where:
C = concentration, in mg per ml,
of sorbitol in the standard preparation;
RU = the peak response
of the sample preparation
RS = the peak response
of the standard preparation.
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