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  1. 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)
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