Appearance White crystals or crystalline powder
Assay 98.5-101.5%
PH 5.4-6.0
Specific rotation (20/D) -32.7°~ -34.7°
Heay metals(as Pb) 15ppm max
Chloride 0.05% max
Sulfate 0.03% max
Iron 0.003% max
Loss on drying 0.2% max
Residue on ignition 0.4% max
