| ≥1 piece | 5 |
| item | index |
| Appearance | White or light-brown crystal or powder. |
| Loss on drying | 1.0% Max |
| Moisture | 0.5% max |
| Assay | 98.5% Min |
| Specific rotation | -26.7° ~ -29.6 ° |
| Heavy metals | 10 PPM Max |
| Arsenic | 2 PPM Max |
| PH | 5.0-6.5 |