GB 1903.57-2022 Translated English of Chinese Standard (GB 1903.57-2022, GB1903.57-2022): National food safety standard - Food nutritional fortification substance - Manganese(II) citratehttps://www.chinesestandard.net, 30/01/2023 - 11 páginas This standard applies to the food nutrition enhancer manganese citrate prepared by a chemical reaction and with citric acid, manganese sulfate, and manganese carbonate as the main raw materials. 2 Chemical name, molecular formula, structural formula, and relative molecular mass 2.1 Chemical name Manganese citrate 2.2 Molecular formula Mn3(C6H5O7)2 ? 10H2O (decahydrate) Mn3(C6H5O7)2 (anhydrous substance) 2.3 Structural formula (anhydrous substance) 2.4 Relative molecular mass 723.17 (decahydrate) (according to 2018 International Relative Atomic Mass) 543.02 (anhydrous substance) (according to 2018 International Relative Atomic Mass) 3 Technical requirements 3.1 Sensory requirements GB 1903.57-2022 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery Page 4 of 11 Sensory requirements shall meet the requirements in Table 1. Table 1 -- Sensory requirements Item Requirements Testing method Color Light pink or pinkish white Take an appropriate amount of sample and place it in a clean and dry white porcelain dish, observe its color and state under natural light State Fine particles 3.2 Physicochemical indexes The physicochemical indexes shall meet the requirements in Table 2. Table 2 -- Physicochemical indexes Item Index Testing method Manganese citrate content [by Mn3(C6H5O7)2, dry basis], w/% 96.5~104.8 A.4 in Appendix A Loss on drying, w/% Decahydrate Anhydrous substance ¡Ü 23.0~26.0 2.0 A.5 in Appendix A Total arsenic (by As)/(mg/kg) ¡Ü 3.0 A.6 in Appendix A Lead (Pb)/(mg/kg) ¡Ü 2.0 A.7 in Appendix A Sulfate (by SO4), w/% ¡Ü 0.02 A.8 in Appendix A GB 1903.57-2022 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery Page 5 of 11 Appendix A Testing method A.1 Warning Some of the reagents used in the test method of this standard are toxic or corrosive, and they must be used with caution and in accordance with relevant regulations. If a toxic or corrosive reagent splashes on the skin, it shall be washed with water immediately; if the hurt is serious, it sha... |
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25 mL colorimetric according to GB accurate Acetic anhydride add water ammonia-ammonium chloride buffer Ammonium sulfide solution amount of residue Analysis steps Weigh appropriate amount Balance barium blue calculated according carmine color carried out according chloride buffer solution cool dark dilute the solution disodium EDTA standard dissolve dropwise EDTA standard titration eriochrome black exceed fourth method Glacial acetic acid grams g heating plate Hydrochloric acid solution impurity determination indicator Instruments and equipment loss on drying mark method of GB Method summary minutes mL hydrochloric acid Operation steps prepared according pressure provisions of GB/T Pyridine Reagents and materials relevant regulations requirements are specified residue on ignition result sample solution sample the weight sense quantity shake solution to 100 stand standard solution standard titration solution sulfate test solution Take temperature test solution Testing method third toxic or corrosive treated turbid unless other requirements vacuum drying weighing bottle