Product No. | Product name | specifications |
1.09426.010 | Zinc sulfate heptahydrate | AR500g |
1.09426.020 | Zinc sulfate heptahydrate | AR25kg |
1.09426.030 | Zinc sulfate heptahydrate | CP500g |
1.09426.040 | Zinc sulfate heptahydrate | CP25kg |
Item | AR | CP |
Assay(ZnSO4 · 7H2O) | ≥99.5% | ≥99.0% |
pH value (50g / L solution, 25 ℃) | 4.4~6.0 | 4.4~6.0 |
Clarity test, number | ≤3 | ≤5 |
Water insoluble | ≤0.01% | ≤0.02% |
Chloride (Cl) | ≤0.0005% | ≤0.002% |
Total nitrogen (N) | ≤0.001% | ≤0.002% |
Arsenic (As) | ≤0.00005% | ≤0.0002% |
Sodium (Na) | ≤0.05% | ≤0.1% |
Magnesium (Mg) | ≤0.005% | ≤0.01% |
Potassium (K) | ≤0.01% | ≤0.02% |
Calcium (Ca) | ≤0.005% | ≤0.01% |
Manganese (Mn) | ≤0.0003% | ≤0.001% |
Iron (Fe) | ≤0.0005% | ≤0.002% |
Copper (Cu) | ≤0.001% | ≤0.005% |
Cadmium (Cd) | ≤0.0005% | ≤0.002% |
Lead (Pb) | ≤0.001% | ≤0.01% |