1 | Appearance/Description | White, odorless crystalline powder. | White to faintly yellowish –white, odorless crystalline powder. |
2 | Solubility | Passes | Freely soluble in water, slightly soluble in alcohol. Practically insoluble in dichloromethane. |
3 | Identification (By Chemical test) | Complies | The mixture turns bright yellow and becomes clear. |
4 | Identification (By IR) | Complies | The IR absorption spectra of a substance should concomitant with the corresponding standard. |
5 | Completeness and color of solution / Appearance of solution | 0.017 | The solution is clear and its absorbance should not be more than 0.030. |
6 | Melting range | 128°C to 131°C | Between 128°C to 132°C. |
7 | Specific rotation | -16.9° | Between -16.0° to -17.3°. |
8 | Specific optical rotation (Dried substance) | -16.9 | Between -16.0 to -17.0. |
9 | Loss on drying | 0.4% | Not more than 0.5 %. |
10 | Residue on ignition /Sulfated ash | 0.05% | Not more than 0.1 % . |
11 | Absence of reducing substances | Passes | The colour of the solution does not change. |
12 | Reducing substances | Less than 0.2% | 0.2% max. as glucose. |
13 | Assay | 99.8% | 99.0 % - 100.5 % of C7H17NO5 on dried basis. |
14 | chloride | Less than 100 ppm | Not more than 100 ppm. |
15 | Sulphate | Less than 150 ppm | Not more than 150 ppm. |
16 | Aluminium (Al) | 1.8 ppm | Not more than 5 ppm. |
17 | Iron | 7.7 ppm | Not more than 10 ppm. |
18 | Nickel (Ni) | 1.2 ppm | Not more than 5 ppm. |
19 | Residual Solvents (Methanol) | 545 ppm | Not more than 3000 ppm. |