Properties of argon
Thermophysical properties for argon (CAS: 7440-37-1). 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
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Open CalculatorIdentification
- AtomsAr: 1
- CAS7440-37-1
- FormulaAr
- ID7440-37-1
- InChIAr
- InChI KeyXKRFYHLGVUSROY-UHFFFAOYSA-N
- IUPAC Nameargon
- Molecular Weight (kg)39.948
- Phaseg
- PubChem ID2.3968e+4
- SMILES[Ar]
- Synonyms
Physical Properties
- Acentric factor-0.00219
- Critical pressure (bar)48.63
- Critical temperature (°C)-122.463
- Critical volume (m³/kmol)0.0745855
- Dipole moment0
- Melting temperature (°C)-189.34
- Normal boiling temperature (°C)-185.848
State-dependent Properties
- Compressibility factor1
- Density (kg/m³)1.63284
- Dynamic viscosity (cP)0.022624
- Enthalpy of vaporization (mass) (kJ)0
- Enthalpy of vaporization (molar) (kJ/kmol)0
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient4.2132e-13
- Kinematic viscosity1.3856e-5
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))20.7863
- Molar volume (m³/kmol)24.4654
- Parachor
- Poynting correction factor
- Prandtl number0.663378
- Saturation pressure (bar)6.7196e+4
- Saturation temperature (°C)-185.848
- Solubility parameter
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity1.37857
- Specific heat capacity (kJ/kg·K)0.520333
- Surface tension0
- Thermal conductivity0.0177456
- Thermal diffusivity2.0887e-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