Testing terms | Specifications | Results |
Character | a white or almost white crystalline powder | a white crystalline powder |
pH | 3.5 ~ 5.5 | 4.8 |
Specific optical rotation | +290°~+315° | +308° |
Related substances | ≤1.0% | 0.1% |
Water | 11.5% ~ 14.5% | 13.2% |
Sulphated ash | ≤1.0% | 0.09% |
Assay | 95.0% ~102.0% | 101.0% |