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GB 1886.296-2016: National Food Safety Standard -- Food Additives -- Ammonium Citrate
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National Food Safety Standard -- Food Additives -- Ammonium Citrate
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GB 1886.296-2016
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Basic data | Standard ID | GB 1886.296-2016 (GB1886.296-2016) | | Description (Translated English) | National Food Safety Standard -- Food Additives -- Ammonium Citrate | | Sector / Industry | National Standard | | Classification of Chinese Standard | X42 | | Word Count Estimation | 6,663 | | Date of Issue | 2016-08-31 | | Date of Implementation | 2017-01-01 | | Regulation (derived from) | State Health and Family Planning Commission Notice No. 11 of 2016 | | Issuing agency(ies) | National Health and Family Planning Commission of the People's Republic of China, State Food and Drug Administration | GB 1886.296-2016: National Food Safety Standard -- Food Additives -- Ammonium Citrate---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.
(Food Safety National Standard Food Additive Ammonium Citrate)
National Standards of People's Republic of China
National Food Safety Standard
Food additives ferric ammonium citrate
Published 2016-08-31
2017-01-01 implementation
People's Republic of China
National Health and Family Planning Commission issued
National Food Safety Standard
Food additives ferric ammonium citrate
1 Scope
This standard applies to citrate, ferrous or ferric sulfate, ammonia as raw materials, food additives, ferric ammonium citrate was prepared by machining.
This standard also applies to food fortifier ferric ammonium citrate.
Structural formula 2 and the formula
Formula 2.1
(NH4) xFey (C6H4O7) z
2.2 Structure
In C6H8FeNO7 an example, the following structural formula.
3 Technical requirements
3.1 Sensory requirements
Sensory requirements shall comply with the requirements in Table 1.
Table 1 Sensory requirements
Project requires test methods
Color and smell of green to brown, odorless or slight ammonia smell
State scaly, granular or powdered
The proper amount of sample was placed on white porcelain plate was observed under natural light
Its color and state, smell the smell
3.2 Physical and Chemical Indicators
Physical and chemical indicators should be consistent with the provisions of Table 2.
Table 2. Physical and chemical indicators
Item Index Test Method
Ferric ammonium citrate content (as Fe), w /%
Green brown salt salt
14.5 ~ 16.0 16.5 ~ 22.5
Appendix A A.4
Ferric citrate experimentally Appendix A A.5
Appendix A oxalate experimentally A.6
Sulfate (in terms of SO4), w /% ≤ 0.3 Appendix A A.7
Lead (Pb)/(mg/kg) ≤ 2.0 GB 5009.12
Total arsenic (As)/(mg/kg) ≤ 4.0 GB 5009.11
Total mercury (Hg)/(mg/kg) ≤ 1.0 GB 5009.17
Appendix A
Testing method
A.1 Warning
Reagents of this standard test method for use in corrosive or toxic, the operation should take appropriate safety and protective measures.
If necessary, to be carried out in a fume hood. As splashed on the skin should immediately wash with water, severe cases should be treated immediately.
A.2 General Provisions
Unless otherwise specified in this standard, it should be analytical reagent purity above, the standard titration solution, impurities determined by standard solution used,
Formulations and products, shall GB/T 601, GB/T 602, GB/T 603 provisions prepared test water shall meet the GB/T 6682 in three water
Provisions. The test does not indicate when the solution which is formulated with a solvent, refer to the aqueous solution.
A.3 Identification Test
A.3.1 Reagents and solutions
Hydrochloric acid solution A.3.1.1. 19.
A.3.1.2 ferric chloride solution. 100g/L.
A.3.1.3 potassium permanganate solution. potassium permanganate weighed 0.3161g, dissolved in water volume to 100mL, a concentration of approximately 0.1mol/L.
Mercury sulfate solution A.3.1.4. Take yellow mercuric oxide 5g, mixed with water 40mL, 20mL sulfuric acid was added with stirring, add water 40mL,
Stir until completely dissolved.
A.3.1.5 sodium hydroxide solution. 1mol/L.
A.3.2 identification method
A.3.2.1 sample soluble in water, insoluble in ethanol.
A.3.2.2 0.5g of sample burning, the resulting residue was dissolved 5mL hydrochloric acid solution, the resulting solution was mixed with ferric chloride solution contrasting color
the same.
A.3.2.3 taken 5mL10% sample solution, potassium permanganate solution were added 0.3mL, 4mL mercury sulfate solution, the mixed solution was heated to
Boiling, a white precipitate formed.
A.3.2.4 Weigh 0.5g sample was dissolved in 5mL of water, sodium hydroxide solution was added 5mL, red-brown precipitate formed, the mixture was heated,
There ammonia release.
A.4 Determination of ferric ammonium citrate content (Fe) of
A.4.1 Reagents and solutions
A.4.1.1 hydrochloric acid.
A.4.1.2 KI.
A.4.1.3 sodium thiosulfate standard titration solution. c (Na2S2O3) = 0.1mol/L.
A.4.1.4 starch indicator solution. 5g/L.
A.4.2 Analysis step
Weigh about 1g sample to the nearest 0.1 mg, placed in 250mL iodometric flask, 25mL water was added to dissolve, then add hydrochloric acid and 5mL iodine 4g
Potassium, shake, stoppered, allowed to stand in the dark after 15min, add water 100mL, titration with standard sodium thiosulfate titration, is added near the end point
1mL starch indicator solution and continue the titration solution until blue color disappeared, while the blank test.
A.4.3 calculation results
The content of ferric ammonium citrate (Fe) mass fraction w1, calculated according to formula (A.1).
w1 =
(V-V0) × c × M
m × 1000 ×
100% (A.1)
Where.
V --- standard sodium thiosulfate titration of the sample solution volume in milliliters (mL);
--- volume V0 of the blank test standard sodium thiosulfate titration solution used, in milliliters (mL);
C --- The actual concentration of the solution titrated with sodium thiosulfate standard units of moles per liter (mol/L);
--- M iron molar mass in grams per mole (g/mol) [M = 55.85];
--- m sample mass in grams (G);
1000 --- conversion factor.
The arithmetic average of the measurement results parallel the measurement results, the measurement results of two parallel allows absolute difference less than 10%.
Determination of iron citrate A.5
A.5.1 Reagents and solutions
Potassium ferrocyanide solution. 100g/L.
A.5.2 Analysis step
Weigh 1.0g sample was dissolved was added 100mL of water, potassium ferrocyanide solution was added 10mL, no blue precipitate formed, that is, by experiment.
A.6 Determination of oxalate
A.6.1 Reagents and solutions
A.6.1.1 ether.
A.6.1.2 glacial acetic acid.
Hydrochloric acid solution A.6.1.3. 19.
A.6.1.4 calcium acetate solution. Weigh 5.00g calcium acetate dissolved in water, dilute to 100mL.
A.6.2 Analysis step
1.00g sample was taken, dissolved in 10mL of water was added, was placed in a 125mL separatory funnel, then added 2mL of hydrochloric acid solution, washed with 50mL
And 20mL of diethyl ether, and the combined extracts were in the 150mL beaker, add water, 10mL, ether evaporated to dryness on a water bath, in an aqueous solution was added dropwise 1
Calcium acetate and 1mL of glacial acetic acid solution, the turbidity not 5min, namely by experiment.
Determination A.7 Sulfate (SO4 basis)
A.7.1 Reagents and solutions
Hydrochloric acid solution A.7.1.1. 19.
A.7.1.2 sulfate solution. 0.005mol/L.
Barium chloride solution A.7.1.3. 120g/L.
A.7.2 Analysis step
0.1g sample was weighed to the nearest 0.1 mg, dissolved in water, a 50mL colorimetric tube, was added a solution of hydrochloric acid 1mL, diluted with water
To 50mL, this sample solution. Another one cuvette, was added 0.60mL sulfuric acid solution was added hydrochloric acid 1mL, diluted with water
To 50mL, this is a control solution. If the solution is not clarified, then the two solutions were filtered under the same conditions. Barium chloride solution were added to 2mL,
Placed 10min after mixing. From the comparison both the turbidity of sample solution turbidity of color on a black background above the tube should not exceed a control turbidity,
I.e., sulfate content of the sample (in terms of SO4) not more than 0.3%.
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