Items | Standard | Analysis data |
Appearance | White crystals or crystalline powder | conforms |
Specific rotation[α]20/D (C=1 Acetic acid) | +9.3°+ 2° | 8.14° |
Melting point | 159 to 168℃ | 160℃ |
Heavy metal(Pb) | Not more than 20ppm | <20ppm |
Arsenic (As2O3) | Not more than 2ppm | <2ppm |
Loss on Drying | Not more than 0.50% | 0.18% |
Residue on ignition | Not more than 0.30% | 0.1% |
Assay | 98.0% to 102% | 98.6% |