Appearance White crystals or crystalline powder
Assay 98.5-101.5%
PH 5.5-7.0
Specific rotation (20/D) -29.4°~ -32.8°
Hevy metals(as Pb) 0.0015% max
Chloride 0.05% max
Sulfate 0.03% max
Iron 0.003% max
Loss on drying 0.3% max
Residue on ignition 0.1% max
