| Item | specification |
| Appearance | White crystalline powder |
| Specific Rotation | +23°- +25° |
| Melting Range | 165.0~170.0 ºC |
| Appearance of solution | Clear and colourless |
| Conforms | ≤ 20μS/cm |
| Reducing Sugars | ≤ 0.20% |
| acidity | ≤ 0.30ml |
| sulphate | ≤ 0.01% |
| chloride | ≤ 0.005% |
| Sulphate ash | ≤ 0.1 % |
| oxalic acid | ≤ 0.02% |
| Lead | ≤ 0.5ppm |
| Nickel | ≤ 1ppm |
| Water | ≤ 050% |
| arsenic | ≤ 0.0002% |
| Assay(dried) | 98.0%-102.0% |
| Sorbitol | ≤ 2% |
| Endotoxin | ≤ 2.5EU/g |
| IP | Conforms |