Properties of oxygen
Thermophysical properties for oxygen (CAS: 7782-44-7). Use the selector below to view properties in different unit systems.
Calculation Conditions
The following state-dependent properties were calculated at these standard conditions.
Temperature
25 °C
Pressure
1.01325 bar
Need properties at a different state? Use our interactive calculator.
Open CalculatorIdentification
- AtomsO: 2
- CAS7782-44-7
- FormulaO2
- ID7782-44-7
- InChIO2/c1-2
- InChI KeyMYMOFIZGZYHOMD-UHFFFAOYSA-N
- IUPAC Namemolecular oxygen
- Molecular Weight (kg)31.9988
- Phaseg
- PubChem ID977
- SMILESO=O
- Synonyms
Physical Properties
- Acentric factor0.0222
- Critical pressure (bar)50.43
- Critical temperature (°C)-118.569
- Critical volume (m³/kmol)0.0733676
- Dipole moment0
- Melting temperature (°C)-218.79
- Normal boiling temperature (°C)-182.962
State-dependent Properties
- Compressibility factor1
- Density (kg/m³)1.30792
- Dynamic viscosity (cP)0.0205504
- Enthalpy of vaporization (mass) (kJ)0
- Enthalpy of vaporization (molar) (kJ/kmol)0
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient2.9812e-13
- Kinematic viscosity1.5712e-5
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))29.3759
- Molar volume (m³/kmol)24.4654
- Parachor
- Poynting correction factor
- Prandtl number0.716234
- Saturation pressure (bar)8531.05
- Saturation temperature (°C)-182.962
- Solubility parameter
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity1.10425
- Specific heat capacity (kJ/kg·K)0.918032
- Surface tension0
- Thermal conductivity0.0263404
- Thermal diffusivity2.1937e-5
Safety Properties
- Autoignition temperature (°C)-273.15
- Flash point temperature (°C)-273.15
- Lower flammability limit
- Upper flammability limit0.235
Environmental Properties
- Global warming potential
- Ozone depletion potential
Failed Properties:
- API gravityFailed