Zinc Sulfate Heptahydrate
|
Items
|
Standard Values
|
Actual values
|
|
Outward
|
white crystal
|
white crystal
|
|
ZnSO4·H2O,%
|
≥94.5
|
96
|
|
Zn,%
|
≥21
|
21.55
|
|
Pb,%
|
≤20PPM
|
7PPM
|
|
Cd,%
|
≤40PPM
|
17PPM
|
|
As,%
|
≤5PPM
|
2PPM
|
|
CL,%
|
≤0.6
|
0.42
|
|
Water insoluble matter,%
|
≤0.05
|
0.03
|