| 1 | Description | Clear, colourless, hygroscopic, viscous liquid. | Clear, colourless, hygroscopic, viscous liquid | |
| 2 | Solubility | Complies | Soluble in water, ethanol and acetone | |
| 3 | Assay (Anhydrous basis) | 99.9% | Not less than 99.5% | |
| 4 | Infrared absorption | Complies | The infrared spectrum of a potassium bromide dispersion of the sample corresponds with the infrared spectrum below | |
| 5 | Water (By KF) | 0.03% | Not more than 1.0% | |
| 6 | Distillation range | 187-188°C | 99% v/v distils between 185-189o | |
| 7 | Specific gravity | 1.037 | d (20, 20): 1.035 - 1.040 | |
| 8 | Sulphated ash | 0.04% | Not more than 0.07% | |
| 9 | Free acid | Complies | Passes test | |
| 10 | Lead(Pb) | Less than 2 mg/kg | Not more than 2 mg/kg | |