Vitamin B2 83-88-5,Riboflavin

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Product Details

Specifications
CAS No.:
83-88-5
Other Names:
RIBOFLAVIN
MF:
C17H20O6
EINECS No.:
201-507-1
Place of Origin:
Zhejiang, China (Mainland)
Type:
Vitamins, Amino Acids and Coenzymes
Grade Standard:
Feed Grade, Food Grade, Medicine Grade
Brand Name:
UB
Purity:
99%
Appearance:
crystalline powder
MW:
376.37
Packaging Details:
25kg net cartons / drums
Yellow or orange yellow crystalline powder; Smells slightly offensive;
Tastes slightly bitter; Slightly dissoles in water, not dissolve in ether,
alcohol and chlorform, with the melting point of 218~290 °C

Items of Test

Limits of Test

Results of Test

1.Appearance

Orange yellow crystalline powder(USP)

Meets

2.Indentification

Positive

Meets

3.Acidity or Alkalinity

Check the color of the test solution
After adding the respective solutions

Meets

4.Lumiflavin

Absorbance of the filtrate at 440nm
Does not exceed 0.025(USP);not

more intense than BY6(EP/BP)

0.009 Meets

5.Absorbance

0.31 – 0.33 A375nm/A267nm  
     0.36 – 0.39 A444nm/A267nm

0.32/0.38

6. Partical Size

100%passes through 60 mesh sieve

Meets

7. Specific Rotation

between-115°and-135°(EP/BP/USP)

121°(USP)
129°(EP/BP)

8.Loss on Drying

≤1.5%

0.8%

9. Heavy Metals

<10ppm

Meets

10. Residue on Ignition

≤0.03%(USP)
≤0.1%(EP/BP)

0.1%

11.Organic Volatile Impurities

Method IV<467>(USP)

Meets

12. Assay(on dried basis)

98.0% - 102.0%(USP)
97.0% - 10.3.0%(EP/BP)

99.6%

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