Basic Hydrogen Properties Download the information in Excel format:  Properties Value Units Auto ignition temperature 500 °C   932 °F Boiling point (1 atm) -252.9 °C   -423.2 °F Density NTP  0.08375…
Hydrogen Density 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.