CAS number： 9004-54-0
Molecular formula： H(C6H10O5)xO
molecular weight：
Chemical structure：
| Items | Specifications | Results | |||||
| Appearance | white or almost white power | white power | |||||
| Solubility | very slightly soluble in water and insoluble in ethanol | Complies | |||||
| Specific rotation | +195°~+201° | +198° | |||||
| Identification | IR spectrum is consistent with that of reference standard | Complies | |||||
| solution color | ≤0.6 | Complies | |||||
| PH value | 4.0~8.0 | Complies | |||||
| nitrogen | ≤110ppm | Complies | |||||
| Residual solvent | ethanol ≤0.5% | 0.04% | |||||
| molecular weight and molecular weight distribution | Mw 8000~12000 | 10242 | |||||
| Heavy metals | ≤8ppm | Complies | |||||
| Loss on drying | ≤7% | ≤5.3% | |||||
| Residue on ignition | ≤0.3% | 0.12% | |||||
| Assay | ≥99.0% | Complies | |||||
| Endotoxin | ≤10 IU/g | Complies | |||||
| Conclusion | Complies with the requirement of the internal quality standards | ||||||
| Containers and storage | seal and store in a dry place | ||||||
