【product name】:Zinc sulfate(ZnSO4·7H2O), also named white vitriol. It
is an
acicular or powder in white or light yellow crystal. With density of
1.957g/cm2 and easy to dissovle in water, it effloresces gradually in air.
It is likely to sweat and conglobulate.
purpose:Zinc sulfate is the raw material to make lithopone and zinc
salt. It’s the mordant for printing and dyeing industry, preservative
agent for wood and leather, pesticide for fruit trees, medical vomit,
clarifier and preservative agent for bone adhesive, as well as important
subsidiary material to make chemical fiber. In addition, it is also used
as industrial bleacher in electroplating,electroanalysis and paper-
making.
index name |
index |
| ZnSO4·7H2O |
zinc sulfate heptahydrate |
| |
Excellent |
I-class |
qualified |
| （ Zn ）≥% |
22.0 |
21.0 |
20.0 |
| free acid（ ）≤% |
0.1 |
0.2 |
0.3 |
| （ Pb ） ≤% |
0.002 |
0.005 |
0.01 |
| （ Cd ） ≤% |
0.002 |
0.002 |
0.003 |
| （ As ）≤% |
0.002 |
0.005 |
0.007 |
|
