CAS number： 83-88-5
Molecular formula：
molecular weight：
Chemical structure：
|
Product Name |
Vitamin B2 (Riboflavin) |
|
|
Shelf Life |
3 years |
|
|
Test |
Specification |
Results |
|
Appearance |
A yellow or orange yellow crystalline powder |
Yellow crystalline powder |
|
Identification |
A solution of 1 mg in 100ml of water is pale greenish yellow by transmitted light, and has an intense yellowish-green fluorescence that disappears upon the addition of mineral acids or alkalies |
Conform |
| Specific rotation, ° |
-115~-135 |
-122 |
|
Loss on drying, % |
≤1.5 |
0.10 |
|
Residue on ignition, % |
≤0.3 |
0.1 |
|
Lumiflavin |
440nm Absorbance≤0.025 |
0.008 |
|
Assay (on dried basis)% |
98.0~102.0 |
99.1 |
|
Conclusion: The above analytical results conform to USP37. |
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