| ≥1 piece |
| Product | Vitamin B2 | |
| Assay (On dry basis) | 98.0%-102.0% (USP) 97.0%-103.0% (BP) 98.2% | |
| Description | Orange Yellow Crystalline Powder | |
| Identification | Positive | |
| Acidity of Alkalinity | Check the color of the test solution after adding the respective solutions | |
| Lumiflavin | Absorbance of the filtrate at 440nm does not exceed 0.025 (USP); not more intense than BP 0.008 | |
| Absorbance | 0.31-0.33 A373nm/A267nm 0.36-0.39 A444nm/A267nm | |
| Particle Size | 100% passes through 60 mesh sieve | |
| Specific Rotation | Between -115 and -135 (BP/USP) -125 | |
| Loss on Drying | 0.5% | |
| Heavy Metals | <10ppm | |
| Residue on Ignition | <0.3% (USP) <0.1% (BP) 0.1% | |
| Organic Volatile Impurities | Method IV |