Bioaxis Chemicals Co., Ltd
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Bioaxis Chemicals Co., Ltd |
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Riboflavin£¨VB2£©
Molecular formula£ºC17H20N4O6
Molecular weight£º376.37
Description£ºIt is yellow or orange crystalline powder, a little bitter and a little odor. Its solution is easy to be metamorphosed£¬and the change in ray or alkalescence solution is faster. Melting point :280¡æ£¨dissociation£©.It is very slightly soluble in water and alcohol.
Quality Standard£ºIt confirms to USP24/BP98¡¢¡¶pharmacopoeia of the People's Republic of China¡·£¨2000£©(See attached table).
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Item |
Index£¨USP24£© |
Index £¨BP98£© |
¡¶pharmacopoeia¡·£¨2000£© |
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Exterior |
Yellow or orange |
Yellow or orange |
Orange-yellow crystalline powder |
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Identification |
Positive reaction |
Positive reaction |
Positive reaction |
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Specific Rotation[¦Á] |
+56.5º~+59.5º
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-115º~-135º |
-120º~-140º |
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Acidity or alkalinity(PH) |
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Up to standard |
4.5~7.0 |
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Loss on drying |
¡Ü1.5% |
¡Ü1.5% |
¡Ü1% |
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Residue on Ignition |
¡Ü0.3% |
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¡Ü0.2% |
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Lumiflavine |
440nmNMT ¡Ü0.025 |
Conform |
440nmNMT¡Ü0.016 |
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Light absorption |
/ |
A375nm/267nm=0.31~0.33 A444nm/267nm=0.36~0.39 |
A375nm/267nm=0.31~0.33 A444nm/267nm=0.36~0.39 |
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Content |
98~102% |
98~101% |
98.0~102.0% |
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Volatile organic impurities |
Conform |
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Package£ºInside packing ¡ª¡ªedible polyethylene plastic film edible
Outside packing¡ª¡ªcarton£¨51*47*30cm£©£»
Net weight: 10kg;Gross weight: 12kg.
Usage£ºTreat the illness of scarcity of VB2¡£
Storage and Transportation£ºIt must be stored in the warehouse of ventilation, dry and shady and cool, and cannot be mixed with poisonous. The temperature must be not higher than 30¡æ.Transportation is the same as storage