CAS:50-81-7

分子式：C6H8O6

SPECIFICATION(BP/2009/USP32/EP6/FCCVI)

Characteristics:White or almost white crystals or crystalline powder

Identification:Positive

Clarity of Solution:Clear

Colour of Solution:<BY7

Melting Point: 191℃—192℃

Assay: 99．0%—100.0%

Acidity(PH): 2.2—2．5

Residue on Ignition: ≤0.1%

Specific Rotation: +20.5°—+21.5°

Heavy Metals: ≤0.0003%

Oxalic Acid: ≤0.2%

Copper: ≤0.0005%

Iron: ≤0.0002%

Lead: ≤2ppm

Organic Volatile Impurities: Meets USP 32 stipulation