


| Appearance | white crystalline powder |
| Solubility | water 1:10 |
| Identification | positive |
| Melting point | 198~201→ |
| Specific Rotation | -63˚~-67˚ |
| PH Value | 5.0~7.0 |
| Heavy Metal | <=0.002% |
| Loss on drying | <=1.0% |
| Residue on ignition | <=0.1% |
| Content | >=98.0% |
| Appearance | white or off white crystalline powder |
| Melting point | 151~155→ |
| Heavy metal | <=0.002% |
| Arsenic | <=0.002% |
| Residue on ignition | <=0.1% |
| Assay | >=98.0% |