| ITEMS | Specifications |
| Appearance | White crystalline powder |
| Assay (dry Basis, %) | 99.0-100.5 |
| pH (1% Solution) | =< 8.6 |
| Loss on Drying (%) | =< 0.20 |
| Chlorides (Cl, %) | =< 0.50 |
| Ammonia | Pass test |
| Insoluble substances | Pass test |
| Whiteness (%) | >= 85 |
| Lead (Pb) | =< 2 mg/kg |
| Arsenic (As) | =< 1 mg/kg |
| Heavy Metal (as Pb) | =< 5 mg/kg |