No.1 With the use of acid processing technology, hazardous residue has been removed out completely ,heavy Metal contents are lowest,health indicator is more stricter.
Zinc Sulfate
Chemical name:Zinc sulfate
Formula:ZnSO4•H2O
Molecular weight:179.41
Appearance: White powder, anti-caking ,good fluidity
Physical and Chemical indicator:
Item |
Indicator |
ZnSO4•H2O | 94.7 |
Zn Content, % ≥ | 35 |
Total arsenic (subject to As), mg / kg ≤ | 5 |
Pb (subject to Pb), mg / kg ≤ | 10 |
Cd(subject to Cd),mg/kg ≤ | 10 |
Hg(subject to Hg),mg/kg ≤ | 0.2 |
Water content,% ≤ | 5.0 |
Fineness (Passing rate W=250µm test sieve), % | 95 |