| Item | Standard | Result |
| Appearance | White powder | Conform |
| Assay (%) | ≥99.0 | Conform |
| Melting point (℃) | 92.0-96.0 | 93.2-95.8 |
| Loss on drying (%) | ≤0.5 | 0.2 |
| Ignition residue (%) | ≤0.5 | 0.07 |
| Heavy metal (PPM) | ≤10 | Conforms |
| Arsenic (ppm) | ≤2 | Conforms |
| Item | Standard | Result |
| Appearance | White powder | Conform |
| Assay (%) | ≥99.0 | Conform |
| Melting point (℃) | 92.0-96.0 | 93.2-95.8 |
| Loss on drying (%) | ≤0.5 | 0.2 |
| Ignition residue (%) | ≤0.5 | 0.07 |
| Heavy metal (PPM) | ≤10 | Conforms |
| Arsenic (ppm) | ≤2 | Conforms |