| Appearance | White crystal or crystalline powde |
| Infrared Spectroscopy | Conforms to known standard |
| Specific Rotation[α]20/D | -152°~ -167°(C=2,1NHCL) |
| Transmit tance | ≥98.0% |
| Sulphate(SO42-) | ≤0.02% |
| Iron(Fe) | ≤10ppm |
| Residue on ignition | ≤0.10% |
| Heavy metal(Pb) | ≤10ppm |
| Assay | 98.5%~101.0% |
| Loss on drying | ≤1.0% |