Appearance White crystals or crystalline powder
Indentification(IR) Conforms to standard spectrum
Assay 98.5-101.0%
Chromatographic purity(TLC) Total impurities: 2.0%max
Individual impurities: 0.5% max
Specific rotation +14.0°~ +15.6°
Chloride(as Cl) 0.05% max
Sulphate 0.02% max
Iron 0.003% max
Heay metals(as Pb) 0.0015% max
Loss on drying 0.2% max
Residue on ignition 0.1% max
Solution transmittance 98.0%min
