Items | Standard |
Description | White, hygroscopic, granular powder or transparent crystals |
Identification | Passes test |
Appearance of solution | Clear and colourless |
Assay | 99.0%-101.0% |
Chloride | ≤50ppm |
Heavy metals (As Pb) | ≤10ppm |
Sodium | ≤0.3% |
Oxalates | ≤0.03% |
Sulphates | ≤0.015% |
Acidity or Alkalinity | Passes test |
Readily carbonization | Not deeper than standard |
Loss on drying | 4.0%-7.0% |