| Testing Item | Standard | Result |
| Assay | 99.0%-100.5% | 99.72% |
| Appearance | White or almost White crystals Crystalline Powder | pass |
| Solubity | Easily soluble in water | pass |
| Identification | Positive Reaction | Positive |
| Melting Point | About 190ºC | 190.6 ºC |
| Copper | ≤5ppm | <5ppm |
| Heavy Metals | ≤10ppm | <10ppm |
| Mercury | ≤0.1mg/kg | <0.1mg/kg |
| Lead | ≤2mg/kg | <2mg/kg |
| Arsenic | ≤3ppm | <3ppm |
| Oxalic Acid | ≤0.2% | <0.2% |
| Iron | ≤2ppm | <2ppm |
| Cadmium(Cd) | <1mg/kg | <1mg/kg |
| Impurity E | ≤0.2% | <0.2% |
| Loss on Drying | ≤0.4% | <0.4% |
| Sulphate Ash(Residue On Ignition) | ≤0.1% | <0.1% |
| Specific Optical Rotation | +20.5°-+21.5° | 21.08° |





