
| Analysis item |
Standard requirements (%) |
| SrSO4 content |
≥99.0 |
| Barium sulfate (BaSO4) |
≤0.1 |
| Calcium sulfate (CaSO4) |
≤0.08 |
| Chloride (Cl) |
≤0.01 |
| Calcium oxide (CaO) |
≤0.05 |
| Iron (Fe) |
≤0.01 |
| Sodium (Na) |
≤0.008 |
| Potassium (k) |
≤0.005 |
| Water content |
≤0.1 |
| Appearance |
White fine powder |