1. Appearance and properties: colorless or slightly yellow transparent viscous liquid.
2. Melting point(℃): 17
3. Density: relative density (H20 = 1): 1.27
4. Relative vapor density (air = 1): 0.62
5. Saturated vapor pressure (mm Hg): 17.535 (20 ℃)
6. Solubility: miscible with water, ethanol or glycerol in any proportion, insoluble in diethyl ether.