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Argon - Thermophysical Properties

Chemical, Physical and Thermal Properties of Argon

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Chemical, physical and thermal properties of Argon  - Ar :

Molecular Weight 39.948
Specific Gravity 1.38
Specific Volume (ft3/lb, m3/kg) 9.8, 0.622
Density of liquid at atmospheric pressure (lb/ft3, kg/m3) 87.0, 1400
Absolute Viscosity (lbm/ft s, centipoises) 13.4 10-6, 0.02
Sound velocity in gas (m/s) 322
Specific Heat - cp - (Btu/lboF or cal/goC, J/kgK) 0.125, 523
Specific Heat Ratio - cp/cv 1.67
Gas constant - R - (ft lb/lboR, J/kgoC) 38.7, 208
Thermal Conductivity (Btu/hr ft oF, W/moC) 0.0102, 0.0172
Boiling Point - saturation pressure 14.7 psia and 760 mm Hg - (oF, oC) -303, -186
Latent Heat of Evaporation at boiling point (Btu/lb, J/kg) 70, 163000
Freezing or Melting Point  at 1 atm (oF, oC) -308.5, -189.2
Critical Temperature (oF, oC) -187.6, -122
Critical Pressure (psia, MN/m2) 707, 4.87
Critical Volume (ft3/lb, m3/kg) 0.0299, 0.00186
Flammable no

See also more about atmospheric pressure, and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure, as well as Thermophysical properties of:
AcetyleneAir, Ammonia, Butane, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Helium, Hydrogen, Methane, MethanolNitrogen, Oxygen, Propane, Water and Heavy water, D2O.

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