Description: white crystalline powder
Assay: 97.0% ~103.0%
Indetification: positive
Specific rotation: -29o~-32o
PH: 5.5~9.5
Water: NMT4.0%
Residue on ignition: NMT0.5%
Chloride: NMT0.4%
Potassium: NMT0.2%
Sodium: NMT0.1%
Heavy metals: NMT20ppm
Residue solvent: NMT0.5%