| ≥1 piece |
product name:biotin (vitamin H)
specification
| item |
specification |
|
characters |
a white crystalline powder |
|
identification |
a: ir |
|
appearance of solution |
clear and colourless |
|
specific optical rotation |
+89? +93?/p> |
|
related substances |
meets the requirements |
|
heavy metals |
d10ppm |
|
loss on drying |
d1.0% |
|
sulfated ash |
d0.1% |
|
assay |
98.5% - 101.0% |
|
storage |
store protected from light |