Test item

specifications

Assay

98.5% to 101.5%

Identification

Infrared absorption

Specific rotation

-9.8° to -11.2°

Loss on drying

Not more than 0.3%

Residue on ignition

Not more than 0.4%

Chloride

Not more than 0.04%

Sulfate

Not more than 0.04%

Iron

Not more than 0.003%

Heavy metals

Not more than 0.0015%

Chromatographic purity

Not more than 0.5% of any individual impurity is found, and not more than 2.0% of total impurities is found

Organic volatile impurities

Meets the requirements