Gases - Critical Temperatures and Pressures

Critical temperatures and pressures for some common gases - air, alcohol, ether, oxygen and more

Sponsored Links

  • A substance can not exist as a fluid above the Critical Temperature
  • The pressure of saturated vapor at critical temperature is the Critical Pressure
Gas Critical temperature Critical pressure Boiling temperature
(oF) (oC) (psi) (lb/sq.in) (bar) (oF) (oC)
Air -220.9 -140.5 547 37.71 - -
Ammonia (NH3) 270 132.4 1636 112.8 -27.4 -33
Carbon-dioxide (CO2) 87.8 31 1070 73.8 -110 -79
Carbon-monoxide (CO) -220.5 -140.3 508 35 -310 -190
Hydrogen (H) -400 -240 189
13 -423 -253
Nitrogen (N) -232.6 -147 493 34 -321 -195
Oxygen (O2) -155 -118.6 731 50.4 -297 -183

Sponsored Links

Search the Engineering ToolBox

Related Topics

  • Gas and Compressed Air - Gas properties, capacities of pipelines, sizing of relief valves - air, LNG, LPG and more

Related Documents

  • Ideal Gas Law - In perfect or ideal gas the change in density is directly related to the change of temperature and pressure as expressed by the Ideal Gas Law

Engineering ToolBox - SketchUp Edition - Online 3D modeling!

3D Engineering ToolBox - draw and model technical applications

Engineering ToolBox - SketchUp Edition - enabled for use with the amazing, fun and free Google SketchUp

Translate the Engineering ToolBox
About the EngineeringToolbox