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Magnesium sulfate heptahydrate, 99% (pure)
| Impurities content (weight %) | |
|---|---|
| Insoluble in water substances | <0.002 |
| Acidity (H2SO4) | <0.002 |
| Alkalinity (MgO) | <0.001 |
| Phosphates (PO43-) | <0.0005 |
| Chlorides (Cl-) | <0.003 |
| Iron (Fe2+) | <0.0005 |
| Calcium (Ca2+) | <0.02 |
| Arsenic (As3+) | <0.00004 |
| Heavy metals (Pb2+) | <0.0001 |



