Specifications (according to USP /BP/CP/EP standards)
grade project | MgSO4·7H2O Magnesium Sulphate Heptahydrate | MgSO4·5H2O Magnesium Sulphate Pentahydrate | MgSO4·3H2O Magnesium Sulphate Trihydrate | MgSO4·2H2O Magnesium Sulphate Dihydrate | MgSO4·H2O Magnesium Sulphate Monohydrate | MgSO4 Magnesium Sulphate Anhydrous |
Exterior | White crystals | White powder or crystal | White powder or crystal | White powder or crystal | White powder or crystal | White powder or crystal |
Main content ≥% | 99.5 | 99 | 99 | 99 | 99 | 98 |
Magnesium sulphate ≥% | 48.59 | 56 | 68 | 76 | 86 | 98 |
Magnesium oxide ≥% | 16.20 | 19.00 | 22.70 | 25.30 | 28.60 | 32.60 |
Magnesium ≥% | 9.80 | 11.31 | 13.65 | 15.23 | 17.21 | 19.6 |
PH value (5% aqueous solution) | 5.0-9.2 | 5.0-9.2 | 5.0-9.2 | 5.0-9.2 | 5.0-9.2 | 5.0-9.2 |
Iron (Fe) ≤% | 0.0015 | 0.0015 | 0.0015 | 0.0015 | 0.0015 | 0.0015 |
Cl (Cl) ≤% | 0.014 | 0.014 | 0.014 | 0.014 | 0.014 | 0.014 |
Heavy metal (Pb) ≤% | 0.0006 | 0.0006 | 0.0007 | 0.0007 | 0.0008 | 0.0008 |
As (As) ≤% | 0.0002 | 0.0002 | 0.0002 | 0.0002 | 0.0002 | 0.0002 |