Item

standard

Results

Description

White to crystalline powder

conformed

Solubility

Practically insoluble in water, freely soluble in methylene chloride, sparingly soluble in ethanol

Conformed

Heavy metals

≤10ppm

＜10ppm

Arsenic

≤10ppm

＜1ppm

Loss on drying

≤0.5%

0.05%

Residue on lgnition(anhydrous)

≤0.1%

0.02%

Related substances
Single impurity
Total impurity

≤0.2%
≤0.3%

0.10%

0.12%

Assay

99.0%-101.0%

99.6%