| Item | Standard | Result |
| Appearance | White crystalline powder/granule | Conform |
| Assay (%) | 99.5-101.0 | 99.9 |
| Melting point (℃) | 175-182 | 177.1-177.5 |
| PH | 6.5-7.5 | 6.99 |
| Loss on drying (%) | ≤1.0 | 0.26 |
| Residue on ignition (%) | ≤0.1 | 0.05 |
| Chloride | ≤0.2 | Conform |
| Item | Standard | Result |
| Appearance | White crystalline powder/granule | Conform |
| Assay (%) | 99.5-101.0 | 99.9 |
| Melting point (℃) | 175-182 | 177.1-177.5 |
| PH | 6.5-7.5 | 6.99 |
| Loss on drying (%) | ≤1.0 | 0.26 |
| Residue on ignition (%) | ≤0.1 | 0.05 |
| Chloride | ≤0.2 | Conform |