Ascorbic Acid Vitamin C Powder, Brand Name : OEM

Appearance white or almost white, crystalline powder or colourless crystalsrnmelting point about 190℃, with decompositionrnidentification positive reactionrnph (with 5% water solution) 2.1 ~ 2.6rnph (with 2% water solution) 2.4 ~ 2.8rnappearance of solution clarity : clear; colour: ≤by7rnspecific optical rotation +20.5º~ +21.5ºrnloss on drying ≤0.4%rnimpurity e ≤0.2%rnrelated substance impurity c: ≤0.15%rnimpurity d: ≤0.15%rnunspecified impurities: ≤0.10%rntotal impurities: ≤0.2%rncopper ≤5.0ppmrniron ≤2.0ppmrnarsenic ≤3.0ppmrnlead ≤2.0ppmrnmercury ≤1.0ppmrncadmium ≤1.0ppmrnheavy metals ≤10ppmrnsulphated ash ≤0.1%rnresidual solvents meets the requirementrnassay 99.0%~100.5%.