Item | Standard | Analysis data |
Appearance | White crystals or crystalline powder | conforms |
Transmittance | Not less than 95.0% | 9635% |
Specific Rotation [25/D] (C=3 in water at 25 ºC) | -11.5º to -13º | -11.55º |
Chloride (Cl) | Not more than 0.04% | <0.04% |
Ammonium(NH4) | Not more than 0.01% | <0.01% |
Sulfate (SO4) | Not more than 0.048% | <0.04% |
Iron(Fe) | Not more than 30ppm | <30ppm |
Heavy Metal(Pb) | Not more than 10ppm | <10ppm |
Arsenic(As2O3) | Not more than 2ppm | <2ppm |
Loss on drying | Not more than 0.50% | 0.25% |
Residue on ignition(sulfated) | Not more than 0.2% | 0.04% |
Assay | 98.0% to 101.0% | 98.5% |