ovoflavine vitaminB2 riboflavine
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Test Items | Specifications | Results |
Appearance | Orange yellow crystalline powder | Meets |
Identification | Positive | Meets |
Acidity or Alkalinity | check the color of the test solution after adding the respective solutions | Meets |
Lumiflavin | Absorbance of the filtrate at 440nm does not exceed 0.025(USP);not more intense than BY6(EP/BP) | 0.009 Meets |
Absorbance | 0.31-0.33 A373nm/A267nm 0.36-0.39 A444nm/A267nm | 0.32 ,0.38 |
Particla Size | 100% passes through 80 mesh sieve | Meets |
Specific Rotation | between-115° and 135° (EP/BP/USP) | -127° |
Loss on drying | ≤1.5% | 0.004 |
Heavy Metals | <10ppm | Meets |
Residue on Ignition | ≤0.3%(USP) ≤0.1%(EP/BP) | 0.001 |
Residual Solvents | Method IV <467> (USP) | Meets |
Assay(on dried basis) | 98.0%-102.0%(USP) 97.0%-103.0%(EP/BP) | 1.004 |
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