Test | Specification | Result |
| Appearance | White or off-white powder | Complies |
| Identification A | Produces a white precipitate which is insoluble in 2N nitric acid solution and soluble in 6N ammonia water | Complies |
| Identification B | The infrared absorption spectrum is consistent with the standard | Complies |
| Identification C | The peak retention time of the liquid phase is consistent with the standard | Complies |
Assay | 97.0-103.0% | 99.8% |
Melting point | 158-163℃ | 161.4℃ |
| Drying on loss | 5%max | 1.64% |
PH | 5.0-6.5 | 6.1 |
Residue on ignition | 0.1%max | 0.01% |
Conclusion | PASS | |
