SPECIFICATION
| Appearance | White or almost white crystals or crystalline powder |
| Identification | Positive Reaction |
| Melting Point | About 190℃ |
| PH | 2.1 ~ 2.6 |
| Clarity Of Solution | Clear |
| Colour Of Solution | ≤BY7 |
| Copper | ≤5ppm |
| Iron | ≤2ppm |
| Arsenic | ≤3ppm |
| Mercury | ≤0.1mg/kg |
| Lead | ≤2mg/kg |
| Heavy Metals | ≤10ppm |
| Residue On Ignition | ≤0.1% |
| Specific Optical Rotation | +20.5°– +21.5° |
| Oxalic Acid | ≤0.2% |
| Impurity E | ≤0.2% |
| Loss of Drying | ≤0.4% |
| Residue On Ignition | ≤0.1% |
| Specific Optical Rotation | +20.5°–+21.5° |
| Residual Solvents | Meets the requirements. |
| Assay | 99.0%-100.5% |
MOLECULAR STRUCTURE：
Molecular Formula:C6H8O6
