| Item | Specification |
| Appearance | White crystalline powder |
| Assay | 9. 0% min |
| Clarity of Solution | Colourless and clear |
| Loss and Drying | 0.02% |
| Calcined Residue | 0.01% |
| Heavy Metals(Pb) | 1ppm |
| As | 0.1ppm |
| Chloride (as Cl) | 0.001% |
| Sulphate (as SO4) | 0.001% |
| Ammonium Salt (as NH4) | 0.01% |
| Easily Carbonized | Matter Colorless |