Item | Standard | Analysis data |
Appearance | White crystals or crystalline powder | conforms |
Specific rotation[α]20/D | -11.8 to -12.8° | -11.83° |
State of solution (Transmittance) | Not less than 95.0% | 97.9% |
Chloride (Cl) | Not more than 0.10% | 0.015% |
Heavy metal(Pb) | Not more than 10ppm | <10ppm |
Arsenic(As2O3) | Not more than 2ppm | <2ppm |
Loss on drying | Not more than 0.20% | 0.2% |
Residue on ignition(sulfated) | Not more than 0.2% | 0.085% |
Assay | 98.0 to101.0% | 98.8% |
Conclusion | The product conforms to the standard. |