Items | Specification |
Assay | 99.0-101.0% |
Water | 11.0-13.0% |
Sulphate salt | 0.015% max |
Oxalate salt | 0.03% max |
Alkalinity | 0.2% max |
Readily carbonisable substance | pass |
Chloride | 0.005% max |
Transparence and coulor | pass |
Heavy metal(as Pb) | 10 ppm max |
Arsenic (As) | 1 ppm max |