| Main Component |
Methane (CH?), typically 85–98% |
| Other Components |
Ethane, Propane, Butane, Nitrogen (trace) |
| Density (at -162°C) |
430–470 kg/m³ |
| Boiling Point |
Approximately -162°C |
| Heating Value (Gross) |
48–55 MJ/kg (depending on composition) |
| Heating Value (Net) |
43–50 MJ/kg |
| Wobbe Index |
48–57 MJ/m³ |
| Methane Number |
Typically ≥ 80 |
| Flash Point |
Below -188°C |
| Autoignition Temperature |
Approximately 540°C |
| Critical Temperature |
-82.6°C |
| Critical Pressure |
4.6 MPa |
| Odor |
Odorless (odorant added for safety in pipelines) |
| Color |
Colorless |
| State |
Liquid (cryogenic) |
| Expansion Ratio (Liquid to Gas) |
~1:600 |
4444 Connecticut Ave NW Washington DC
20008 
Power