Reference Standard:GB 32449-2015
Molecular formula:MgSO4·7H2O
Appearance:Magnesium Sulfate heptahydrate is colorless crystal
Physical and Chemical indicator:
Item | Indicator | ||
MgSO4·7H2O | MgSO4·H2O | MgSO4·H2O | |
Magnesium sulfate | ≥98.4 | ≥85.5 | ≥91.2 |
Total arsenic (subject to As),% | ≥9.7 | ≥15.0 | ≥16.0 |
Arsenic (As),mg/kg | ≤2 | ||
Pb (subject to Pb), mg / kg | ≤3 | ||
Cd(subject to Cd),mg/kg | ≤1 | ||
Hg(subject to Hg),mg/kg | ≤0.1 | ||
Fineness | W=900μm≥95% | W=400μm≥95% | W=400μm≥95% |
Water content | - | ≤3% | ≤3% |