Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Oxygen - Thermophysical properties

Chemical, Physical and Thermal Properties of Oxygen - O2

Sponsored Links

Oxygen phase diagram

Chemical, physical and thermal properties of Oxygen - O2 :
(Values at 25oC (77oF, 298 K) and atmospheric pressure)

Molecular Weight 31.9988
Specific Gravity, air = 1 1.105
Specific Volume (ft3/lb, m3/kg) 12.24, 0.764
Density of liquid at atmospheric pressure (lb/ft3, kg/m3) 71.27, 1142
Absolute Viscosity (lbm/ft s, centipoises) 13.4 10-6, 0.020
Sound velocity in gas (m/s) 329
Specific Heat - cp - (Btu/lboF or cal/goC, J/kgK) 0.220, 920
Specific Heat Ratio - cp/cv 1.40
Gas constant - R - (ft lb/lboR, J/kgoC) 48.3, 260
Thermal Conductivity (Btu/hr ft oF, W/moC) 0.015, 0.026
Boiling Point - saturation pressure 14.7 psia and 760 mm Hg - (oF, oC) -297.3, -182.97
Latent Heat of Evaporation at boiling point (Btu/lb, J/kg) 91.7, 213000
Freezing or Melting Point  at 1 atm (oF, oC) -361.1, -218.4
Latent Heat of Fusion (Btu/lb, J/kg) 5.9, 13700
Critical Temperature (oF, oC) -181.5, -118.6
Critical Pressure (psia, MN/m2) 726, 5.01
Critical Volume (ft3/lb, m3/kg) 0.040, 0.0025
Flammable no

Follow the links below to get values for the listed properties of oxygen at varying pressure and temperature:

See also more about atmospheric pressure, and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure,
as well as Thermophysical properties of: Acetone, Acetylene, Air, Ammonia, Argon, Benzene, Butane, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Ethylene, Helium, Hydrogen, Hydrogen sulfide, Methane, Methanol, Nitrogen, Pentane, Propane, Toluene, Water and Heavy water, D2O.

Back to top

Oxygen is a gas at standard conditions. However, at low temperature and/or high pressures the gas becomes a liquid or a solid.

The oxygen phase diagram shows the phase behavior with changes in temperature and pressure. The curve between the critical point and the triple point shows the oxygen boiling point with changes in pressure. It also shows the saturation pressure with changes in temperature.

Oxygen phase diagram C

At the critical point there is no change of state when pressure is increased or if heat is added.

The triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.

Back to top

Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: oxygen o2
Sponsored Links

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!

Citation

This page can be cited as

  • Engineering ToolBox, (2008). Oxygen - Thermophysical properties. [online] Available at: https://www.engineeringtoolbox.com/oxygen-d_1422.html [Accessed Day Mo. Year].

Modify access date.

Customize Ads in the ToolBox

Make ads more useful in Google Ad Settings .

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

9 21

Sponsored Links
.