Zinc sulfate heptahydrate - 31665
Code: 31665
Zinc sulfate heptahydrate
Puriss. p.a., ACS Reagent, Reagent ISO, Reagent European Pharmacopoeia, ≥99.5%
≥99.5%, ACS Reagent, Reag. ISO, Reag. Ph. Eur.
CAS Number: 7446-20-0
Linear Formula: ZnSO4 · 7H2O
Molar Mass: 287.56 g/mol
MDL Number: MFCD00149894
| Property |
Value |
| Assay |
min. 99.5 % |
| Water insoluble matter |
max. 0.005 % |
| PH (5 %, 25 °C) |
4.4 - 5.6 |
| Arsenic (As) |
max. 0.00005 % |
| Calcium (Ca) |
max. 0.001 % |
| Cadmium (Cd) |
max. 0.0002 % |
| Copper (Cu) |
max. 0.0005 % |
| Iron (Fe) |
max. 5 ppm |
| Potassium (K) |
max. 0.001 % |
| Magnesium (Mg) |
max. 0.001 % |
| Manganese (Mn) |
max. 2 ppm |
| Sodium (Na) |
max. 0.0005 % |
| Lead (Pb) |
max. 0.0005 % |
| Chloride (Cl) |
max. 5 ppm |
| Ammonium (NH4) |
max. 0.001 % |
| Nitrate (NO3) |
max. 0.002 % |
| Total N |
max. 0.0005 % |
| Appearance of the solution |
complying |
| Property |
Value |
| Freezing point |
100 °C |
| Density |
1.96 g/cm3 |