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 |