| DESCRIPTION | YELLOW CRYSTALLIN POWDER |
| IDENTIFICATION: | ACCORDING TO BP2001 |
| PH VALUE | 2.3 ~ 2.9 |
| ABSORBANCE (353nm, PH2.0) | 270～290 |
| SPECIFIC OPTICAL ROTATION | -188°～-200° |
| HEAVY METALS | ≤50PPM |
| LIGHT ABSORBING IMPURITY | ABSORBANCE AT 430nm, <0.50 |
| ABSORBANCE AT 490nm, <0.20 | |
| RELATED SUBSTANCES | CONTENT OF IMPURITYPEAKMEET THE REQUIREMENTS |
| SULPHATED ASH | ≤0.5％ |
| WATER | ≤2.0％ |
| HPLC ASSAY | 95.0％～102.0％ ANHYDROUS SUBSTANCE |