Zinc
Sulfate Heptahydrate ACS
GENERAL DESCRIPTION
Typical appearance: colorless or white solid
Analytical use: preparation of complexometric titrant
Change in state (approximate): melting point, 40ºC; dehydrates
completely at 200ºC
Aqueous solubility: 96 g in 100 ml at 20ºC
| SPECIFICATIONS |
| Cas No |
7446-20-0 |
| Molecular Formula |
ZnSO4.7H2O |
| Molecular Weight |
287.58 |
| Assay |
99.0 – 103.0% ZnSO4 . 7H2O |
| PH of a 5% solution at 25.0ºC |
4.4 – 6.0 |
| Maximum
Allowable |
| Insoluble matter |
0.01% |
| Chloride (Cl) |
5 ppm |
| Nitrate (NO3) |
0.002% |
| Ammonium (NH4) |
0.001% |
| Calcium (Ca) |
0.005% |
| Iron (Fe) |
0.001% |
| Lead (Pb) |
0.003% |
| Magnesium (Mg) |
0.005% |
| Manganese (Mn) |
3 ppm |
| Potassium (K) |
0.01% |
| Sodium (Na) |
0.05% |
|
 |
| ZINC SULFATE
HEPTAHYDRATE AR |
| Cas No |
7446-20-0 |
| Molecular Formula |
ZnSO4.7H2O |
| Molecular Weight |
287.58 |
| Description |
White crystalline compound |
| Insoluble matter |
Max 0.01% |
| Assay |
Min 99.0 – 100.5.0% |
| PH of 5% sol |
4.4 – 6.0 |
| Chloride (Cl) |
Max 0.001% |
| Nitrate (NO3) |
Max 0.001% |
| Iron (Fe) |
Max 0.0005% |
| Heavy metals (Pb) |
Max 0.001% |
| Ammonium (NH4) |
Max 0.001% |
| Calcium (Ca) |
Max 0.005% |
| Magnesium (Mg) |
Max 0.005% |
| Manganese (Mn) |
Max 0.0003% |
| Potassium (K) |
Max 0.005% |
| Sodium (Na) |
Max 0.01% |
|
| ZINC SULFATE
HEPTAHYDRATE LR |
| Cas No |
7446-20-0 |
| Molecular Formula |
ZnSO4.7H2O |
| Molecular Weight |
287.58 |
| Description |
White crystalline compound |
| Assay |
Min 98.0% |
| PH of 5% sol |
4.4 – 6.0 |
| Chloride (Cl) |
Max 0.005% |
| Iron (Fe) |
Max 0.002% |
| Heavy metals |
Max 0.005% |
|
