| M | 192.13 |
|---|---|
| m.p | 153 - 154.5 °C |

| White to off-white solid | Complying |
| Assay (T) | 99.5-101.0%w/w |
| Subs. darkened by Sulfuric Acid | Complying |
| Iron (Fe) | max. 0.0003% |
| Water insolubles | max. 0.005% |
| Sulfate (SO4) | max. 0.002% |
| Oxalate (C2O4) | max. 0.05% |
| Phosphate (PO4) | max. 0.001% |
| Residue after ignition | max. 0.02% |
| Chloride (Cl) | max. 0.001% |
| Lead (Pb) | max. 0.0002% |
| Water (KF) | max. 0.5%w/w |