Appearance White crystals or crystalline powder
Identification IR: Complies with the ref. spectrum
Assay 98.5-101.5%
Chromatagraphic purity Complies
Specific rotation (20/D) -9.8°~ -11.2°
Hevy metals(as Pb) 0.0015% max
Chloride 0.04% max
Sulfate 0.04% max
Iron 0.003% max
Organic volatile impurities Meets the requirement
Loss on drying 0.3% max
Residue on ignition 0.4% max
