Specification :

Product Name : Ascorbic Acid ( Vitamin C )
Chemical Formular: C6H8O6
Molecular Weight: 176.13
CAS No.: 50-81-7
H.S Code : 29362700.00
Specifications:
Appearance White or almost white crystals or crystalline powder
Identification Positive Reaction
Melting Point e190
PH Value: 2.2-2.5
Clarity Of Solution Clear
Colour Of Solution dBY7
Copper d5ppm
Heavy Metals d10 ppm as Pb
Mercury d0.1mg/ kg
Lead d2mg/ kg
Arsenic d3ppm
Cadmium ( Cd)  d1mg/ kg
Oxalic Acid d0.2%
Iron d2ppm
Loss on Drying d0.4%
Sulphate ash ( Residue on Ignition)  d0.1%
Specific Optical Rotation + 20.5° ~ + 21.5°
Organic Volatile Impurities Pass
Assay 99.0~ 100.5%
Standard BP2008/ USP31