| Property |
Specification |
| State |
Liquid |
| Color |
Colorless |
| Odor |
Odorless |
| Density |
430-470 kg/m³ (at -162°C) |
| Boiling Point |
-162°C |
| Freezing Point |
-183°C |
| Viscosity |
0.1-0.2 cP (centipoise) |
| Specific Gravity |
0.41-0.49 |
| Heat of Vaporization |
510-600 kJ/kg |
| Energy Content (Higher Heating Value) |
55-60 MJ/kg |
| Energy Content (Lower Heating Value) |
46-55 MJ/kg |
| Critical Temperature |
-82.3°C |
| Critical Pressure |
4.6 MPa |
| Chemical Composition |
Primarily Methane (CH?), with minor amounts of ethane, propane, and other hydrocarbons |
| Flammability Range |
5-15% methane in air (by volume) |
