Vitamin C, also known as L-ascorbic acid, is an essential nutrient for higher primates and a few other organisms. Ascorbic acid is metabolically produced in most organisms, but humans are the most notable exception. The most widely known is that a lack of vitamin C can cause scurvy. The pharmacophore of vitamin C is the ascorbic acid ion. In living organisms, vitamin C is as an antioxidant because it protects the body from the threat of oxidants, and vitamin C is also a coenzyme.

Specifications:
Appearance: White or almost white crystalline powder
Identification: Positive Reaction
Melting Point: About 190
pH Value(2% Aqueous Solution): 2.4-2.8
pH Value(5% Aqueous Solution): 2.1-2.6
Clarity of Solution: Clear
Color of Solution: BY7
Copper(Cu): 5ppm
Iron(Fe): 2ppm
Heavy Metals: 10ppm
Lead(Pb): 2ppm
Arsenic(As): 3ppm
Mercury(Hg): 0.1ppm
Oxalic Acid: 0.2%
Impurity E: 0.2%
Loss on Drying: 0.4%
Sulphate Ash(Residue on Ignition): 0.1%
Specific Optical Rotation: +20.5 - +21.5
Residual Solvents: Meets the standard
Assay: 99.0%-100.5%