USD $5.00-7.00 / Gram
USD $5.00-7.00 / Gram
USD $5.00-7.00 / Gram
USD $5.00-7.00 / Gram
USD $10.00-100.00 / Kilogram
USD $8.20-8.80 / Kilogram
USD $8.20-8.80 / Kilogram
USD $8.20-8.80 / Kilogram
USD $8.20-8.80 / Kilogram
description |
yellow crystallin powder |
compiies |
identification: |
according to bp2001 |
compiies |
ph value |
2.3 ~ 2.9 |
2.50 |
specific optical rotation |
-188°~-200° |
-188° |
absorbance (353nm, ph2.0) |
270 ~290 |
275.0 |
light absorbing impurity |
absorbance at 430nm, <0.50 |
0.32 |
absorbance at 490nm, <0.20 |
0.11 |
|
related substances |
content of impurity peak meet the requirements |
complies |
heavy metals |
≤50 a(0.2%, 1cm, 430nm)<0.50 |
0.28 |
sulphated ash |
≤0.5% |
0.08% |
water |
≤2.0% |
1.3% |
hplc assay |
95.0%~102.0% anhydrous substance |
96.2% |