1 | Description | White crystalline powder. having a strongly acid. Melts at 130.4°C | White or practically white, crystalline powder or granules, having a strongly acid. Melts at about 130°C. |
2 | Solubility | Complies | Very soluble in water; freely soluble in alcohol and Sparingly soluble in acetone. |
3 | Identification (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of the standard. |
4 | Identification (By Melting point) | 130.4°C | 128.0°C - 132.0°C |
5 | Appearance of solution | Complies | Clear and colourless. |
6 | Assay | 99.8% | 99.0% - 100.5% |
7 | Assay (anhydrous substance) | 100.0% | 99.0% to 101.0% |
8 | Optical Rotation | 0.00° | -0.10° to + 0.10° |
9 | Water insoluble substances | 0.007% | NMT 0.1% |
10 | Residue on ignition | 0.02% | NMT 0.1% |
11 | Related substances: Impurity A (Fumaric acid) | 0.9% | NMT 1.0 % |
12 | Related substances: Impurity B (Maleic acid) | 0.027% | NMT 0.05% |
13 | Related substances: Any other impurity | Not detected | NMT 0.1% |
14 | Related substances: Total impurity | Not detected | NMT 0.5% |
15 | Water | 0.2% | NMT 2.0% |