Item | Unit | Criteria | ||
battery grade | first grade | second grade | ||
Zinc chloride (ZnCl2)content | % | ≥98.0 | ≥98.0 | ≥96.0 |
chlorid oxidation (Calculate in ZnO), | % | 1.8-2.2 | 2.2 | 2.2 |
sulfate(SO4) | % | ≤0.01 | ≤0.01 | ≤0.01 |
barium(Ba) | % | ≤0.1 | ≤0.1 | ≤0.2 |
ferrum (Fe) | % | ≤0.0005 | ≤0.001 | ≤0.002 |
plumbum(Pb) | % | ≤0.0005 | ≤0.001 | ≤0.002 |
zinc plate cauterization experiment | qualified | qualified | qualified | qualified |