
| Gas fuel name | Symbol | ρ [kg/m3] | MJ/kg | MJ/m³ | 
|---|---|---|---|---|
| Hydrogen | H₂ | 0.08985 | 120.0 | 10.8 | 
| Methane | CH₄ | 0.717 | 50.0 | 35.9 | 
| Ethane | C₂H₆ | 1.357 | 47.5 | 64.1 | 
| Ethylene | C₂H₄ | 1.261 | 47.2 | 59.5 | 
| Natural gas | NG | 0.7 | 46.1 | 33.5 | 
| Propene | C₃H₆ | 1.914 | 45.8 | 87.5 | 
| Propane | C₃H₈ | 2.02 | 46.4 | 93.2 | 
| Butane | C₄H₁₀ | 2.48 | 45.8 | 123.0 | 
| Isobutane | C₄H₁₀ | 2.703 | 45.6 | 122.0 | 
| Butylene-1 | C₄H₈ | 2.603 | 45.3 | 117.0 | 
| LPG | LPG | 2.28 | 46.0 | 108.0 | 
| Acetylene | C₂H₂ | 1.097 | 48.2 | 56.5 | 
| Carbon Monoxide | CO | 1.25 | 10.1 | 12.6 |