7782-63-0 Sell high quality Iron(II) sulfate heptahydrate produced in China factory 7782-63-0 seller in China
Test item |
Specification |
|
Reagent grade |
Pharmaceutical grade |
|
Appearance |
Conform |
Conform |
Assay /% |
≥99.0-101.0 |
≥98.0-101.0 |
Water insoluble /% |
≤0.005 |
≤0.02 |
Chloride (Cl)/% |
≤0.001 |
≤0.005 |
N/% |
≤0.001 |
- |
Phosphate (PO4)/% |
≤0.0005 |
≤0.002 |
Arsenic (As)/% |
≤0.0002 |
≤0.0002 |
Manganese (Mn)/% |
≤0.05 |
- |
Ferric (Fe)/% |
≤0.02 |
≤0.10 |
Copper (Cu)/% |
≤0.002 |
≤0.01 |
Zinc (Zn)/% |
≤0.005 |
≤0.02 |
Lead (Pb)/% |
≤0.002 |
≤0.005 |
Ammonia not sediment /% |
≤0.05 |
≤0.2 |
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