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GB 25547-2010: National food safety standards of food additives dehydrogenation sodium acetate
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National food safety standards of food additives dehydrogenation sodium acetate
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GB 25547-2010
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Basic data | Standard ID | GB 25547-2010 (GB25547-2010) | | Description (Translated English) | National food safety standards of food additives dehydrogenation sodium acetate | | Sector / Industry | National Standard | | Classification of Chinese Standard | X42 | | Classification of International Standard | 67.220.20 | | Word Count Estimation | 8,842 | | Date of Issue | 2010-12-21 | | Date of Implementation | 2011-02-21 | | Regulation (derived from) | Ministry of Health Bulletin No. 19 of 2010 | | Issuing agency(ies) | Ministry of Health of the People's Republic of China | | Summary | This Chinese standard applies to the dehydrogenation of acetic acid and sodium hydroxide (or sodium carbonate or sodium bicarbonate) reaction of food additives deoxy sodium acetate. | GB 25547-2010: National food safety standards of food additives dehydrogenation sodium acetate---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
National food safety standards of food additives dehydrogenation sodium acetate
National Standards of People's Republic of China
National standards for food safety
Food Additives Dehydrogenated Sodium Acetate
2010-12-21 release
2011-02-21 Implementation
Issued by the Ministry of Health of the People's Republic of China
Foreword
Appendix A of this standard is a normative appendix.
National standards for food safety
Food Additives Dehydrogenated Sodium Acetate
1 Scope
This standard applies to dehydroacetic acid and sodium hydroxide (or sodium carbonate or sodium bicarbonate) reaction prepared by the food additive dehydrogenated sodium acetate.
2 normative reference documents
The documents cited in this standard are indispensable for the application of this standard. Any reference to the date of the document, only the date of the edition
This applies to this standard. For undated references, the latest edition (including all amendments) applies to this standard.
3 Chemical name, molecular formula, structural formula and relative molecular mass
3.1 Chemical name
3- (1-hydroxymethylene) -6-methyl-1,2-pyran-2,4 (3H) -dione
3.2 Molecular formula
C8H7NaO4 · H2O
3.3 Structural formula
3.4 Relative molecular mass
208.15 (according to the.2007 International Relative Atomic Quality)
4 technical requirements
4.1 sensory requirements. should be consistent with the provisions of Table 1.
Table 1 sensory requirements
The project requires a test method
Color white or near white
Tissue state powder
Take appropriate laboratory samples and place them in a clean, dry white porcelain dish
In the natural light, visual observation
4.2 Physical and chemical indicators. should be consistent with the provisions of Table 2.
Table 2 Physical and chemical indicators
Item Index Test Method
Sodium dehydroacetate (based on C8H7NaO4, dry basis), w /% 98.0 to 100.5 Appendix A, A.4
The free base test was passed in Test Appendix A, A.5
Moisture, w /% 8.5 to 10.0 Appendix A, A.6
Chloride (in terms of Cl), w /% ≤ 0.011 Appendix A A.7
Arsenic (As)/(mg/kg) ≤ 3 Appendix A A.8
Lead (Pb)/(mg/kg) ≤ 2 Appendix A A.9
Appendix A
(Normative appendix)
Testing method
A.1 Warning
Some of the test procedures specified in the test method may result in a hazardous situation. Operators should take appropriate safety and protective measures.
A.2 General provisions
Unless otherwise stated, only the reagents identified as analytical reagents and the tertiary water specified in GB/T 6682-2008 are used in the analysis.
Standard titration solution used in the test method, standard solution for the determination of impurities, preparations and articles, in the absence of other requirements,
GB/T 601, GB/T 602 and GB/T 603.
A.3 Identification test
Take about 1.5g of laboratory samples, dissolved in 10mL water, add 5mL hydrochloric acid solution (13), filter the crystal, with 10mL water
Rinsed and dried at 75 ° C to 80 ° C for 4 h. The crystal should be melted at 109 ° C to 111 ° C.
A.4 Determination of sodium dehydroacetate
A.4.1 Methodological Summary
Samples were treated with glacial acetic acid as the solvent, p-naphthol benzene as the indicator, titration with titanate titration of perchloric acid, according to the consumption of perchloric acid standard drops
Rhithers. Refundurals. Rh- andigmaulates composition Usomen composition Results.1 Copyright Avithers. Rhithers. Refunds wanted composition composition Results Avg Points. Rhitheric composition composition composition composition Results
A.4.2 Reagents and materials
A.4.2.1 Glacial acetic acid.
Rh. Results Results Results compositions. Decision Tang
Rhithers. and Rh'aint nights rounds. Refinding composition Results ,igma group draft model Results Rhithers.itheromeniation polymers views Rh calling
A.4.3 Analysis steps
Roundsy sws. Refers to rounds. Refithers to rounds.itheromenigma Rhithericulates Rhither Rh Take 25mL glacial acetic acid, add
1 drop p-naphthol benzene indicator solution, titrated with perchloric acid standard titration solution to blue, this has been neutralized to blue glacial acetic acid into the sample called
Cone bottle, the sample is completely dissolved with perchloric acid standard titration solution titrated to the original blue is the end point.
A.4.4 Calculation of results
The mass fraction w1 of sodium dehydroacetate (calculated as C8H7NaO4), expressed as a value in terms of formula (A.1)
Where.
V --- sample consumption perchloric acid standard titration solution (A.4.2.2) volume in milliliters (mL);
c - the exact value of the perchloric acid standard titration solution concentration in moles per liter (mol/L);
m - the mass of the sample, in grams (g);
The molar mass of sodium M-dehydroacetate (C8H7NaO4) is in grams per mole (g/mol) (M = 190.1);
w2 --- A.6 mass fraction of moisture measured,%.
The arithmetic mean of the results of two parallel measurements is the result of the report. The absolute difference between the two parallel determinations is not more than 0.2%.
A.5 Free base test
A.5.1 Reagents and materials
A.5.1.1 Sulfuric acid standard titration solution. c (1/2H2SO4) = 0.100mol/L.
A.5.1.2 phenolphthalein indicator solution. 10g/L.
A.5.2 Analysis steps
Weigh 1.0g of laboratory samples, accurate to 0.01g, dissolved in about 20mL of carbon dioxide-free water, add 2 drops of phenolphthalein indicator solution, the solution was
Red, plus 0.4mL ± 0.02mL sulfuric acid standard titration solution, shake, red should disappear.
A.6 Determination of moisture
According to GB/T 6283 direct titration method.
The arithmetic mean of the results of two parallel measurements is the result of the report. The absolute difference between the two parallel determinations is not more than 0.2%.
A.7 Determination of Chloride
A.7.1 Reagents and materials
A.7.1.1 Nitric acid solution. 1 10.
A.7.1.2 Silver nitrate solution. 17 g/L.
A.7.1.3 Chloride (Cl) standard solution. 0.1 mg/mL.
A.7.2 Analysis steps
Weigh 1g of laboratory samples, accurate to 0.01g, add about 30mL of water dissolved, while stirring with 9.5mL nitric acid solution, filtration, water
Wash the combined washings and filtrate in a 100 mL colorimetric tube and add water to 50 mL as the test solution. Another take a color tube, add 1mL ±
0.02mL chloride (Cl) standard solution, add 30mL water, add 6mL nitric acid solution, add water to 50mL as the standard turbid solution. Minute
Do not add 1mL silver nitrate solution in the two colorimetric tubes, mix well, avoid direct sunlight, place 5min. On a black background side or axis
To observe, the turbidity of the test solution shall not be greater than the turbidity of the standard turbid solution.
A.8 Determination of arsenic
According to GB/T 5009.76 arsenic spot method. Samples were processed by wet digestion. Measure the amount of 10.0mL sample solution (equivalent to
1.0g laboratory samples). Preparation of the standard solution. 3.0 mL of arsenic (As) standard solution (equivalent to 3.0 μgAs) was removed from the pipette,
With the same sample at the same time.
A.9 Determination of lead
A.9.1 Colorimetric method (arbitration law)
According to GB/T 5009.75. Before use, 1 mg/mL of the lead standard solution was diluted to 5 μg/mL of lead standard solution. Measurement
Timely draw 25 mL ± 0.02 mL sample solution (equivalent to 2.5 g laboratory sample) and 1 mL ± 0.02 mL lead standard solution (equivalent
In 5μgPb), placed in 125mL separatory funnel, lead standard solution by adding 1% nitric acid solution to 25mL.
A.9.2 Atomic Absorption Spectrometry
According to GB 5009.12. The sample treatment is carried out according to GB/T 5009.75. When using graphite furnace atomic absorption spectroscopy, visual samples
The sample solution is appropriately diluted.
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