ascorbic acid - f012

ASCORBIC ACID (VITAMIN C)

FORMULA: C6H8O6
Molecular Weight: 176.13
CAS No.: 50-81-7
E-Code No.: E-300
EINECS code: 2000662

Appearance: White granular powder, melting at about 190degrees centigrade. Gradually darkens on exposure to light and/or heat, reasonably stable in air when dry, but deteriorates in solution in the presence of air. One gram is soluble in about 3ml of water and in about 30ml of alcohol. It is insoluble in chloroform, in ether, and in benzene.

SPECIFICATION (BP2008/USP31/FCCV)
Appearance: White to slightly yellowish crystalline power
Identification Positive Reaction
Clarity of Solution (5% solution) Clear
Color of Solution BY7
Assay 99.0% ~ 100.5%
Particle size (%) mesh No. 20 100
Loss on Drying < 0.2%
Residue on Ignition Max 0.1%
Specific Rotation + 20.5 ~ +21.5 degrees
pH (5% in water) 2.2 ~ 2.5
Heavy Metals (as Pb) Max. 10ppm
Lead Max. 5ppm
Zinc Max. 25ppm
Copper Max. 5ppm
Iron Max. 2ppm
Arsenic Max. 3ppm
Oxalic Acid Max. 0.2%
Shelf Life 3 Years

PACKING:
Two layers of polyethylene liner in net 25kg carton