Industrial zinc sulfate
| Item | Index | |||||
| I type ( monohydrated zinc sulfate ) | II type(Zinc vitriol ) | |||||
| High-class | First-class | Quality | High-class | First-class | Quality | |
| ( calculating Zn )
Main content ( calculating ZnSO4·H2O ) ≥% |
35.7 | 35.34 | 34.61 | 22.51 | 22.06 | 20.92 |
| (calculating ZnSO4·7H2O ) ≥% | 98.0 | 97.0 | 95.0 | 99.0 | 97.0 | 92.0 |
| Insoluable material 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 ( calculating 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 | —— | —— |
