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GB 1903.64-2023: (National Food Safety Standard Food Nutritional Enhancer Manganese Chloride)
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| GB 1903.64-2023 | English | 179 |
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(National Food Safety Standard Food Nutritional Enhancer Manganese Chloride)
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GB 1903.64-2023
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Basic data | Standard ID | GB 1903.64-2023 (GB1903.64-2023) | | Description (Translated English) | (National Food Safety Standard Food Nutritional Enhancer Copper Carbonate) | | Sector / Industry | National Standard | | Classification of Chinese Standard | X09 | | Word Count Estimation | 10,182 | | Date of Issue | 2023-09-06 | | Date of Implementation | 2024-03-06 | | Issuing agency(ies) | National Health Commission of the People's Republic of China, State Administration for Market Regulation | | Summary | This standard applies to food nutrition fortifier copper carbonate prepared from sodium carbonate or sodium bicarbonate, soluble copper salts, or cathode copper (electrolytic copper), liquid ammonia, and carbon dioxide. | GB 1903.64-2023: (National Food Safety Standard Food Nutritional Enhancer Manganese Chloride)---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 Standards of People's Republic of China
National food safety standards
Food nutrition fortifier manganese chloride
Published on 2023-09-06
Implemented on 2024-03-06
National Health Commission of the People's Republic of China
Released by the State Administration for Market Regulation
National food safety standards
Food nutrition fortifier manganese chloride
1 Scope
This standard applies to manganese chloride, a food nutrition fortifier, which is purified from electrolytic manganese or manganese carbonate as raw material and reacted with hydrochloric acid.
2 Chemical name, molecular formula and relative molecular mass
2.1 Chemical name
Manganese chloride tetrahydrate
2.2 Molecular formula
MnCl2·4H2O
2.3 Relative molecular mass
197.90 (according to.2018 international relative atomic mass)
3 Technical requirements
3.1 Sensory requirements
Sensory requirements should comply with Table 1.
Table 1 Sensory requirements
Project requirements inspection method
Color pink to rose red
State translucent irregular crystals
Take an appropriate amount of sample and place it evenly in a clean, dry white porcelain plate or transparent beaker.
Observe its color and condition under natural light
3.2 Physical and chemical indicators
The physical and chemical indicators should comply with the provisions of Table 2.
Table 2 Physical and chemical indicators
Project indicator inspection method
Manganese chloride (MnCl2·4H2O) content (on a dry basis), w/% 98.0~102.0 A.3 in Appendix A
Loss on drying, w/% 36.0~38.5 A.4 in Appendix A
Water-insoluble matter, w/% ≤ 0.005 A.5 in Appendix A
pH(50mg/mL) 4.0~6.0 GB/T 9724
Sulfate (calculated as SO4), w/% ≤ 0.005 A.6 in Appendix A
Ammonium sulfide does not precipitate, w/% ≤ 0.2 A.7 in Appendix A
Iron (Fe)/(mg/kg) ≤ 5 A.8 in Appendix A
Lead (Pb)/(mg/kg) ≤ 4.0 GB 5009.12 or GB 5009.75
Zinc (Zn) passed test A.9 in Appendix A
Appendix A
Testing method
Warning. Some of the inspection processes of this standard use strong acid reagents. Please operate with caution to avoid human injury.
A.1 General provisions
Unless other requirements are specified, the reagents and water used in this standard refer to analytically pure reagents and grade three water specified in GB/T 6682.Under test
Unless other requirements are specified, the standard solutions, standard solutions for impurity determination, preparations and products used shall be in accordance with GB/T 601, GB/T 602,
Preparation in accordance with GB/T 603.The solutions used in the test refer to aqueous solutions unless the solvent used to prepare them is specified.
A.2 Identification test
A.2.1 Reagents and materials
A.2.1.1 Ammonium sulfide solution (mass fraction greater than 8%).
A.2.1.2 Acetic acid.
A.2.1.3 Nitric acid.
A.2.1.4 Silver nitrate solution (10g/L). Weigh 1g of silver nitrate (accurate to 0.01g), add water to dissolve and dilute to 100mL.
A.2.1.5 Ammonia solution (10%). Measure 40mL of concentrated ammonia solution and add water to dilute to 100mL.
A.2.2 Analysis methods
A.2.2.1 Identification of manganese ions
Weigh about 0.5g of the sample, add 10mL of water to dissolve it, and add ammonium sulfide solution (A.2.1.1) to produce a light orange precipitate, which should be dissolved in acetate.
Acids (A.2.1.2).
A.2.2.2 Chloride ion identification
Weigh about 0.5g of the sample, add 10mL of water to dissolve it, and add silver nitrate solution (A.2.1.4) to produce a white precipitate. This precipitate should be insoluble in nitrate.
Acid (A.2.1.3), dissolved in excess ammonia solution (A.2.1.5).
A.3 Determination of manganese chloride content (on a dry basis)
A.3.1 Method principle
In an ammonia-ammonium chloride buffer solution with a pH value of 10, using chrome black T as the indicator and disodium ethylenediaminetetraacetate (EDTA) as the standard
Titrate the solution and calculate the content of manganese chloride based on the dosage of disodium ethylenediaminetetraacetate standard titration solution.
A.3.2 Reagents and materials
A.3.2.1 Hydroxylamine hydrochloride solution. 10%.
A.3.2.2 Disodium ethylenediaminetetraacetate standard titration solution. c(EDTA)=0.1mol/L.
A.3.2.3 Ammonia-ammonium chloride buffer. Weigh 54g of ammonium chloride, dissolve it in water, add 350mL of ammonia, and dilute to 1000mL (pH≈10).
A.3.2.4 Chrome black T indicator liquid. 5g/L.
A.3.3 Instruments and equipment
Electronic balance, accuracy is 0.0001g.
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