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 |