physical properties：
| purity wt% | min 99% |
| Melting point | -160 °C |
| Boiling point | 30 °C(lit.) |
| density | 0.62 g/mL at 25 °C(lit.) |
| vapor density | 2.6 (vs air) |
| vapor pressure | 11.17 psi ( 20 °C) |
| refractive index | n20/D 1.354(lit.) |
| Fp | −51 °C |
| storage temp. | 2-8°C |
| solubility | 0.048g/l |
| pka | >14 (Schwarzenbach et al., 1993) |
| form | Liquid |
| color | Clear colorless |
| explosive limit | 1.3-7.6%(V) |
| Odor Threshold | 1.3ppm |
| Water Solubility | Miscible with water, hydrocarbons, oils, alcohol and ether |
