PHARMACEUTICAL & COSMETIC INGREDIENT > Ascorbic Acid >

Ascorbic Acid

Molecular formula: C6H8O6
Molecular Weight:176.12
CAS No.:50-81-7
INQUIRY

Ascorbic Acid is a white or almost white crystals or powder,a little acid.m.p.190°C-192°C,easily soluble in water,a little soluble in alcohol and uneasily soluble in Ether and chlorofom and other organic solvent.In solid state it is stable in air.Its water solution is easily mutated when it meets with air.

Items	Specification
Characteristics	White or almost white crystal or crystaline powder
Identification	Positive reaction
Melting Point	189-193℃
pH(2% solution)	2.4-2.8
Clarity and color of solution	Clear ≤BY₇
Copper, ppm	≤3.0
Heavy metals, ppm	≤10
Mercury, mg/kg	<1.0
Lead, mg/kg	<2.0
Arsenic, ppm	≤3.0
Cadmium(Cd), mg/kg	<1.0
Oxalic Acid,%	≤0.2
Iron, ppm	≤2.0
Loss of drying, %	≤0.4
Sulphate ash,%	≤0.1
Specific optical rotation	+20.5°- +21.5°
Mesh	100 Mesh
Assay, %	99.0-100.5