Item | Standard | Results | |
Appearance | Yellow to brown crystalline powder | Yellow to brown crystalline powder | |
Purity | 98.0-101.0% | 98.8% | |
Total arsenic | 28.0-28.8% | 28.3% | |
Loss on drying | ≤1.0% | 0.3% | |
Trivalent arsenic | ≤0.05% | 0.04% | |
Residue on ignition | ≤0.5% | 0.3% |