GB 1886.183-2016: Translated English of Chinese Standard. GB 1886.183-2016: National Food Safety Standard - Food Additive - Benzoic Acid
https://www.chinesestandard.net, 2017/08/02 - 15 ページ
This Standard applies to food additive benzoic acid which is made from petroleum toluene through catalytic oxidation and refinement.
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3-methyl biphenyl 3.5 acetic acid 50 mL volumetric absolute difference accordance with Formula accurate to 0.000 accurate to 0.001 acetic acid buffer acetic acid solution acid buffer solution add dropwise DMF Analytical procedure Weigh arithmetic mean value benzoic acid based benzyl benzoate biphenyl material component calcium carbonate calculated in accordance Calculation of results column and operating content of benzoic Ferric chloride Food Additive formamide g of specimen Hydrochloric acid hydroxide standard titration inorganic chlorine internal standard substance m—mass m1—mass of specimen mass fraction mixed standard mL of water mL volumetric flask Nessler tube nitric acid operating conditions parallel tests permanganate standard titration pH 3.5 acetic phthalic acid standard potassium permanganate standard readily carbonizable substances Reagents and materials results The mass silver nitrate sodium hydroxide standard specified in GB/T specimen test solution specimen to place standard titration solution standard working solution sulphuric acid Take the arithmetic Test method titration solution consumed