Item

Index

I Zinc sulfate monohydrate

II Zinc sulfate Heptahydrate

Excellent Product

First-rate Product.

Conformingproduct

Excellent Product

First-rate Product

Conformingproduct

Zn  ZnSO4·H2O ≥% ZnSO4·7H2O

35.7 98.0

35.34 97.0

34.61 95.0  

22.51 99.0

22.06 97.0  

20.92 92.0  

≤%

0.020

0.050

0.10

0.020

0.050

0.10

PH 50g /L ≥%

4.0

4.0

3.0

3.0

Cl ≤%

0.20

0.60

0.20

0.60

Pb ≤%

0.002

0.007

0.010

0.001

0.010

0.010

Fe ≤%

0.008

0.020

0.060

0.003

0.020

0.060

Mn ≤%

0.01

0.03

0.05

0.005

0.10

Cd ≤%

0.002

0.007

0.010

0.001

0.010

Cu ≤%

0.001

0.002