Data including density, flammability range, and auto ignition energy for hydrogen. Properties Value Units Auto ignition temperature [3,a] 500-585 °C   932-1085 °F Boiling point (1 atm) [b] -252.9 °C   -423.2…
Property Units Hydrogen Methane Propane Methanol Ethanol Gasoline Chemical Formula   H2 CH4 C3H8 CH3OH C2H5OH CxHy (x = 4 - 12) Molecular Weight [a, b]   2.02 16.04 44.1 32.04 46.…
Contains a comparison of the amount of fuel necessary to provide the same energy unit based on the lower heating values.
Hydrogen Density at different temperatures and pressures
Hydrogen Entropy at different temperatures and pressures
Hydrogen mass and volume conversion factors at common temperatures and pressures. Data from NIST.
Contains lower and higher heating values for hydrogen and various solid, liquid, and gaseous fuels.