| Properties |
| Appearance |
colorless gas at normal temperature and pressure. Colorless or light yellow transparent liquid in frozen state |
| Specific gravity |
0℃/4℃,liquid state- |
1.732 |
| 20℃,gas state(air=1) |
3.27 |
| Weight value ratio 0℃ |
kg/577.6ml |
1 |
| Pound/261.9ml |
1 |
| Pound/gallon (American system) |
14.44 |
| Viscosity |
(centipoise,0℃): liquid |
0.35 |
| (Poise,0℃): gas |
103*10-6 |
| Freezing point (℃) |
-94℃ |
| Boiling point(℃) |
3.5-4 |
| Vapor pressure (mmHg,0℃) |
3.6℃ |
760 |
| 10.0℃ |
1006 |
| 23.3℃ |
1520 |
| Volatility, volume % |
100 |
| Solubility,25℃,g/100g: water (closed system) |
1.34 |
| Water (open system) |
〈0.1 |
| Organic solvents |
|
| Specific heat,cal/g |
Solid 104.95℃ |
0.147 |
| Liquid 2.43℃ |
0.1978 |
| Gas 100℃ |
0.12 |
| Latent heat of evaporation, boiling point, cal/g |
59.74 |
|
|
.jpg){kind=small}