Liquified Natural Gas
| Chemical Formula | CH₄ (Methane) |
| State at Standard Conditions | Gas |
| Boiling Point at Standard Pressure | -161.6°C (-258.9°F) |
| Density at Standard Conditions | 0.415 kg/m³ (25.8 lb/ft³) |
| Density as Liquid at -162°C | 431 kg/m³ (26.9 lb/ft³) |
| Heat of Vaporization | 50.1 kJ/mol |
| Energy Content (Lower Heating Value) | Approximately 55 MJ/kg |
| Energy Content (Lower Heating Value) | Approximately 24 MJ/liter |
| Autoignition Temperature | 540°C (1004°F) |
| Flash Point | Approximately -196°C (-321°F) |
| Odor | Odorless |
| Color | Colorless |
| Flammability | Highly Flammable |
| Explosion Limits in Air | 5-15% by Volume |
| Critical Temperature | -82.2°C (-116°F) |
| Critical Pressure | 4.6 MPa (46 bar or 667 psi) |