GB 1886.15-2015 Translated English of Chinese Standard. GB1886.15-2015: National Food Safety Standard - Food Additives - Phosphoric Acidhttps://www.chinesestandard.net, 31 ÁÕ.¤. 2020 - 18 ˹éÒ This Standard is applicable to food additive of phosphoric acid produced by thermal method. |
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100mL volumetric flask 10g of specimen 20mL of sulfuric 2mL of potassium 2mL of stannous absorption tube accurate to 0.01g add 20mL ammonium ferrous sulfate arithmetic mean arsenic generation bottle Arsenic Measuring Device arsenic standard solution Calculation of results cerium sulfate standard citrate buffer solution citric acid dilute with water ferrous sulfate standard fluoride by F fluoride ion selective Food Additives glass sand crucible heavy metals hydrochloric acid hydroxide standard titration ion selective electrode lead acetate cotton lead standard solution mass fraction Method summary molar mass parallel determination results Phenolphthalein phosphoric acid H3PO4 potassium iodide solution potentiometer quinoline Reagents and materials saturated calomel electrode shake silver diethyldithiocarbamate-pyridine solution silver sulfate sodium hydroxide solution sodium hydroxide standard solution and 2mL Solution-B Stand for 15min standard titration solution stannous chloride solution sulfate standard titration sulfuric acid solution Take about 10g Take the arithmetic test solution Take trisodium citrate buffer water to 40mL