Items | SPECIFICATION | RESULTS |
Appearance | White or light brown powder | White or light brown powder |
Assay(%) | ≥98.5% | 99.1 |
Specific rotation(°)D20ºC | -26.00~29.00 | -28.2 |
Loss on drying(%) | ≤0.5% | 0.12% |
Heavy metals(ppm)as PB | ≤20ppm | <20ppm |
Arsenic(as As) | ≤2ppm | <2ppm |
lgnited residue | ≤0.5% | <0.5% |