Vitamin B6

Test items

Specifications

BP2011 Standard

Appearance

A white or almost white crystalline powder

Melting point

About 205℃

Identification

B:IR absorption; D:Reaction(a) of chlorides

Appearance of solution

Clear, not more intense than Y7

pH

2.4~3.0

Loss on drying

≤0.5%

Sulphated ash

≤0.1%

Heavy metals

≤20ppm

Related substances

-Impurity B

≤0.15%

-Unspecified impurity

≤0.10%

-Total impurities

≤0.2%

Assay

99.0% ~101.0%

USP 34 Standard

Identification

A: IR absorption; B:Test of chloride

Loss on drying

≤0.5%

Residue on Ignition

≤0.1%

Heavy metals

≤0.003%

Residual solvent-Ethanol

≤0.5%

Chloride

16.9%~17.6%

Assay

98.0% ~ 102.0%