.png)
| Sr.No | Tests | Specifications & Limits | Results |
|---|---|---|---|
| 1 | Characters | A yellow or orange yellow, crystalline hygroscopic as BP | Complies |
| 2 | Solubility |
Soluble in water, very slightly soluble in alcohol as BP | Complies |
| 3 | Identification : (A) Test as per BP (B) Test as per BP (C) Test as per BP (D) Test as per BP |
The specific absorbance at the maximum is 580 to 640 as BP Should comply the test as BP Should comply the test as BP Should comply the test as BP |
610 Complies Complies Complies |
| 4 | pH | Between 5.00 and 6.50 as BP | 5.85 |
| 5 | Specific optical rotation | Between + 38.0' and + 43.0' as BP | + 39.29' |
| 6 | Lumiflavine | Not more intensly coloured than BY6 as BP |
Less than BY6 |
| 7 | Related substances | Free riboflavin not more than 6.0% as BPDiphosphate of riboflavin not more than 6.0% as BP | 4.40% 4.15% |
| 8 | Inorganic Phosphate | Not more than 1.5% as BP | 0.810% |
| 9 | Heavy metals | Not more than 10 ppm | Less than 10 ppm |
| 10 | Loss on Drying | Not more than 8.0% as BP | 5.00% |
| 11 | Assay (on dry basis) | Between 73.00% to 79.00% as BP | 75.41% |