| ITEM | STANDARD | RESULTS |
| Appearance | White to off-white crystalline powder with a characteristic sulfide-like order | Complies |
| Identification | IR:similar to Reference Standard | Complies |
| Appearance of solution | Clear and colorless | Complies |
| Specific Rotation | -127°to -132° | -131° |
| Loss on Drying | ≤0.5% | 0.06% |
| Sulphated Ash | ≤0.2% | 0.03% |
| Heavy metals | ≤0.002% | Complies |
| pH | 2.0 to 2.6 | 2.3 |
| Related Compouds | Single Impurity ≤1.0% Sum of Impurity≤2.0% |
Undetected Undetected |
| Assay(Anhydrous) | 98.0% to 101.5% | 100.2% |
