| Item | Specification | Results | |
| Appearance | White or light brown powder | Conforms | |
| Assay | ≥98.5 | 98.6% | |
| Specific Rotation[α]D 20℃ | -26.00∽-29.00 | -27.9 | |
| Loss on drying | ≤0.5% | 0.07% | |
| Heavy Metals(as Pb) | ≤20ppm | ＜20ppm | |
| Arsenic (as As) | ≤2ppm | ＜2ppm | |
| Ignited residue | ≤0.5% | 0.08% | |