Ascorbic acid
Quality Standards: BP2004/USP28 Items Specification Identification Positive Clarity of Solution …
Quality Standards: BP2004/USP28 Items Specification Identification Positive Clarity of Solution Clear Loss on Drying ≤0.1% Organic Volatile Impurities Pass the Test PH 2.1~2.6 Colour of Solution ≤BY7 Specific Rotation +20.5° ~ +21.5° Oxalic Acid ≤0.2% Sulphate Ash ≤0.1% Total Heavy Metals ≤10ppm As ≤3ppm Pb ≤2ppm Zinc ≤25ppm Copper ≤5ppm Iron ≤2ppm Mercury ≤1ppm Total Plate ≤1000CFU/G Mound ≤100CFU/G E.Coli Negative
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