| 1 | Appearance | Clear, oily liquid, colourless. | Clear, oily liquid, colourless or very slightly yellow (Not more intensely coloured than reference solution Y6. | BP |
| 2 | Solubility | Complies | Practically insoluble in water, miscible with ethanol (96%). | BP |
| 3 | Identification A ( By Relative density, 20°C) | 1.045 | 1.043 - 1.048 | BP |
| 4 | Identification B (By Refractive index, 20±0.5°C) | 1.492 | 1.490 - 1.495 | BP |
| 5 | Identification C (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of the corresponding standard. | BP |
| 6 | Identification D (By TLC) | Complies | The principal spot in the chromatogram obtained with the test solution should similar in position and size to the principal spot in the chromatogram obtained with the reference solution. | BP |
| 7 | Identification E (By Chemical test) | Complies | The solution becomes yellow or brownish-yellow and shows a green fluorescence. | BP |
| 8 | Appearance of solution | Complies | The substance to be examined is clear and not more intensely colored than reference solution Y6. | BP |
| 9 | Acidity | 0.40 mL of 0.1 M sodium hydroxide required | Not more than 0.50 mL of 0.1 M sodium hydroxide should require to change the colour of the indicator. | BP |
| 10 | Related substances | 0.56% | NMT 1.0% | BP |
| 11 | Water | 0.09% | NMT 0.2% | BP |
| 12 | Sulphated ash | 0.07% | NMT 0.1% | BP |
| 13 | Assay | 99.19% | 99.0% - 101.0% m/m | BP |