| ITEM | STANDARDS | ||
| Appearance | White or off-white powder | ||
| Assay(%) | 99.0 to 101.0 | ||
| Specific rotation(°) | +23.0 - +25.0 | ||
| State of solution(%) | 98.0 Min | ||
| Loss on drying(%) | 0.2 Max | ||
| Residue on ignition(%) | 0.1 Max | ||
| Heavy metals(ppm) | 10.0 Max | ||
| As(ppm) | 1.0 Max | ||
| SO4(%) | 0.02 Max | ||
| Fe(%) | 0.001 Max | ||
| NH4(%) | 0.02 Max |