Item | Standard | Analysis data |
State of solution (Transmittance) | Not less than 95.0% | 97.2% |
Heavy metal(Pb) | Not more than 10ppm | <10ppm |
Arsenic(As2O3) | Not more than 2ppm | <2ppm |
Loss on drying | Not more than 0.20% | 0.18% |
Residue on ignition(sulfated) | Not more than 0.20% | 0.10% |
Assay | 98.0 to101.0% | 99.0% |