Shanghai Fine Chemicals

API • Vitamins • Food ingredients
Veterinary Injection & Premix

Vitamin B2

Items of Test Limits of Test
1.Appearance Orange yellow crystalline powder
2.Identification Positive
3.Acidity or Alkalinity check the color of the test solution after adding the respective solutions
4.Lumiflavin Absorbance of the filtrate at 440nm does not exceed 0.025 (USP);not more intense than BY6(BP)
5.Absorbance 0.31-0.33 A373nm/A267nm 0.36-0.39 A444nm/A267nm
6.Particla Size 100% passes through 60 mesh sieve
7.Specific Rotation between-115o and -135o (BP/USP)
8.Loss on Drying ≤1.5%
9.Heavy Metals <10ppm
10.Residue on Ignition ≤0.3% (USP) ≤0.1%(BP)
11.Organic Volatile Impurities Method IV <467> (USP)
12.Assay(ondried basis) 98.0%-102.0% (USP) 97.0%-103.0% (BP)