Zinc sulphate heptahydrate
Zinc sulphate heptahydrate is a white granule or powder at room temperature. It is a common inorganic chemical..Orthogonal crystals have astringency. They are commonly used astringents and will weather in dry air. When heated to 30 °C, it loses one crystal water, loses six crystal water at 100 °C, loses seven crystal water at 280 °C, and decomposes into zinc oxide and sulfur trioxide at 767 °C. Molecular weight: 287.55 CAS number :7446-20-0. Melting point: 100 ℃ Water solubility: 960 g/L. Secret: 1.957 Feed Grade Zinc Sulfate Executive Standard (HG/T2934-2000)
project |
project |
zinc sulfate heptahydrate |
|
ZnSO4,%≥ |
97.3 |
Zn,%≥ |
22.0 |
As,%≤ |
0.0005 |
Pb,%≤ |
0.001 |
Cd,%≤ |
0.002 |
Through 800μm test sieve, % ≥ |
95 |