| What | Value |
|---|---|
| Appearance | White crystalline powder |
| Assay | Min. 98.0% |
| Solubility (10% aq.) | Clear colorless |
| Sulphate (SO4) | < 0.02% |
| Lead (Pb) | < 0.005% |
| Copper (Cu) | < 0.002% |
| Iron (Fe) | < 0.001% |
| Zinc (Zn) | < 0.02% |
| Substance not ppt by H2S (as SO4) |
< 0.2% |
| What | Value |
|---|---|
| Appearance | White crystalline powder |
| Assay | Min. 99.0% |
| Solubility (10% in water) | Clear and colorless |
| Insoluble in water | < 0.005% |
| Ammonium (NH4) | < 0.005% |
| Lead (Pb) | < 0.001% |
| Calcium (Ca) | < 0.01% |
| Iron (Fe) | < 0.001% |
| Potassium (K) | < 0.01% |
| Copper (Cu) | < 0.0005% |
| Magnesium (Mg) | < 0.005% |
| Sodium (Na) | < 0.01% |
| Zinc (Zn) | < 0.01% |
| Nitrate (NO3) | < 0.005% |
| Sulphate (SO4) | < 0.005% |