Items | Standards | ||||
Apperance | White or almost white,crystal or crystalline powder | ||||
Identification | Positive tests for ascorbic acid | ||||
Odour | Odourless | ||||
Melting Point | 189℃-193℃ | ||||
PH(IN 2% Solution) | 2.4-2.8 | ||||
Specific optical rotation(solution 10%) | +20.5°~+21.5° | ||||
Clearity and color of solution | Clear ≤BY7 | ||||
Copper (%) | 0.0003 Max | ||||
Heavy Metals(AS PB)(PPM) | 10 Max | ||||
Mercury(PPM) | 1 Max | ||||
Arsenic(PPM) | 3 Max | ||||
Lead(PPM) | 2 Max | ||||
Iron(%) | 0.0002 Max | ||||
Zinc(%) | 0.0025 Max | ||||
Oxalic Acid(%) | 0.2 Max | ||||
Loss on drying(%) | 0.1 Max | ||||
Sulphate Ash(%) | 0.1 Max | ||||
Assy(%) | 99.0-100.5 | ||||
Moisturte(%) | 0.3 Max |