Testing Item | Standard | Result |
Appearance | White crystalline powder with hygroscopicity | White crystalline powder |
Assaying | 97.0%~103.0% | 99.50% |
ldentification | Infrared or specific curl | positive reaction |
Specific rotation | -29*~-32° | -31.94° |
PH | 5.5~9.5. | 6.54 |
Wet | ≤4.0% | 0.24% |
Loss on Drying | ≤0.5% | 0.03% |
Heavy metals (Pb) | ≤10mg/kg | conforms |
Arsenic salt | ≤1mg/kg | conforms |
Chloride (in CI) | ≤0.4% | conforms |