| Item | Standard | Analysis data |
| Appearance | White powder | Conforms |
| Chloride (Cl) | Not more than0.04% | 0.015% |
| Heavy metal(Pb) | Not more than 10ppm | 8ppm |
| Arsenic(As2O3) | Not more than 2ppm | <1ppm |
| State of solution (Transmittance) | Not less than 95.0% | 98.6% |
| Loss on drying | Not more than 0.20% | 0.15% |
| Residue on ignition (sulfated) | Not more than 0.20% | 0.09% |
| Assay | 98.0 to 101.0% | 99.0% |
