
Seven water zinc sulfate is a chemical article, the general state is a white crystalline powder. English name is sulfate heptahydrate zinc; Alias: dietrichite, goslarite Smell: no smell; Appearance: white crystalline powder Level: industrial grade, fertilizer grade
Items |
Index |
II |
High-class standard |
First-class standard |
Qualified standard |
Specifications |
Zn, % |
22.51 |
22.06 |
20.92 |
ZnSO4 .7H2O, %> = |
99.0 |
97.0 |
92.0 |
Insoluble percentage ,, %< = |
0.02 |
0.05 |
0.10 |
PH >= |
3.0 |
3.0 |
- |
Pb, %< = |
0.001 |
0.010 |
0.010 |
Fe, %< = |
0.003 |
0.020 |
0.060 |
Mn, % < = |
0.005 |
0.1 |
- |
Cd, % < = |
0.001 |
0.010 |
- |
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