product name :
vitamin b2
overview
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cas no :
83-88-5
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einecs no :
201-507-1
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hs code :
2936230000
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grade standard :
bp 98 / usp 24
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appearance :
orange yellow crystalline powder
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packaging details :
25 kg/drum
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application :
widely used in wheat flour, dairy and soy sauce, rice, bread, biscuits, chocolate and so on. it is also sometimes used as a pigment.
product description
【english name】 ：riboflavin；vitamin b2；riboflavine
【molecular formula】: c17h20n4o6
【sturctural formula】 ：
【characteristics】 ：yellow or orange yellow crystalline powder; smells slightly bitter; slightly dissolves in water, not dissolve in ether, alcohol and chloroform, with the melting point of 281∽290℃.
| item | specifications | |
| usp | bp | |
| appearance | orange or yellow crystalline powder | orange or yellow crystalline powder |
| assay(on dried basis) | 98 - 102% | 97 - 103% |
| identificatrion | positive | positive |
| solubility | / | very slightly soluble in water,practically insoluble in ethanol(96%) |
| specific oprical rotation | -115°~-135° | -115°~-135° |
| absorbance | / | a373nm/a267nm=0.31~0.33; a444nm/a267nm=0.36~0.39; |
| loss on drying | ≤1.5% | ≤1.5% |
| residue on ignition | ≤0.3% | ≤0.1% |
| lumiflavin | 440nm absorbance≤0.025 | not more intense than by6 |
【applications】：riboflavin is the essential necessity for organism in normal living as the nutriment for infant, pregnant woman nursing mother, patient after illness and the aged. it, involve , participates in the metabolishm of carbonhydrate, protein and fat, and is the major composition of flavorprotein, the transferring enzyme system of hydrogen, in clinical practice, it is applicable to perleche, glossitis, ophthalmitis, conjunctivitis, ceborrhea, scrotum inflammations with proper effect ,in food and feed industry, it is widely used as food and feed additives
【 specification】： 1. bp/usp/ep
2. usp/fcc
3. food grade
4. 95% dc grade
5. 80% feed grade
others
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