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Zinc Sulphate Heptahydrate
Uses :
It is mainly used as raw material for the production of lithophone and zinc salts. It is also used in synthetic fiber industry, zinc plating , pesticides, flotation, fungicide and water purification. In agriculture, it is mainly used in feed additive and trace element fertilize, etc.
Appearance: White powder, air slaking, soluble in water, micro-soluble in alcohol and insoluble in acetone
Specifications:
Items | Specification | |||||
I Type (Zinc Sulfate Monohydrate) | II Type(Zinc Sulfate Heptahydrate) | |||||
High-Class | First-Class | Qualifier | High-Class | First-Class | Qualifier | |
( calculate Zn ) Main content ( calculate ZnSO4·H2O ) ≥% | 35.7 | 35.34 | 34.61 | 22.51 | 22.06 | 20.92 |
(calculate ZnSO4·7H2O ) ≥% | 98.0 | 97.0 | 95.0 | 99.0 | 97.0 | 92.0 |
Insoluble matter content ≤% | 0.020 | 0.050 | 0.10 | 0.020 | 0.050 | 0.10 |
PH value ( 50g /L ) ≥% | 4.0 | 4.0 | —— | 3.0 | 3.0 | —— |
Chloride ( Cl ) content ≤% | 0.20 | 0.60 | —— | 0.20 | 0.60 | —— |
( Pb ) content ≤% | 0.002 | 0.007 | 0.010 | 0.002 | 0.010 | 0.010 |
( Fe ) content ≤% | 0.008 | 0.020 | 0.060 | 0.005 | 0.020 | 0.060 |
( Mn ) content ≤% | 0.01 | 0.03 | 0.05 | 0.01 | 0.10 | —— |
( Cd ) content ≤% | 0.002 | 0.007 | 0.010 | 0.002 | 0.010 | —— |
( Cu ) content ≤% | 0.001 | —— | —— | 0.002 | —— | —— |
Zinc Sulphate Heptahydrate