Complaint
| Items | Standard | Result |
| Appearance | Dark brown liquid or dark brown solid | Dark brown liquid |
| Assay | 99.0%min | 99.4% |
| Residue on ignition(as sulphate) | 0.2% max | 0.05% |
| Conclusion | Qualifed | |
Items | Standard | Result |
Appearance | White to off-white powder | White powder |
Assay (W/W dry basis) | ≥98.0% | 99.16 % |
Residue on ignition | <0.5% | 0.256% |
Water (w/w by KF) | ≤1.0% | 0.420% |
pH Value(1% aq.) | 5~9 | 7.28 |
