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| Formula | MgSO4•7H2O |
| Molecular weight | 246.48 |
| CAS | 22189-08-8 |
| Properties | Colorless or white granular; easily becoming efflorescent in the dry air. |
| Uses | In agriculture: mainly used in mixed fertilizer or directly used as fertilizer for rubber, palm trees ; Used in tanning, porcelain, pigment, match, fireproof materials, Mg-salt, dyeing, medicine and food additives; Extensively used in food, pharmaceutical and animal remedy industries. |
| Packing | In 25/50/500/1000kg PP/PE bag or on customer request. |
| Inspection Items | Unit | Natural Grade | Synthetic Grade |
| Purity | % ≥ | 99.0 | 99.0 |
| MgO | % ≤ | 16.0 | — |
| Fe | % ≤ | — | 0.005 |
| S | % ≥ | 12.9 | — |
| Cl | % ≤ | 0.5 | 0.30 |
| Water-Insolubles | % ≤ | — | 0.10 |