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Isobaric Properties for Propane

Fluid Data

Isobaric Data for P = 1.0000 atm

Temperature (C)Pressure (atm)Density (kg/m3)Volume (m3/kg)Internal Energy (kJ/mol)Enthalpy (kJ/mol)Entropy (J/mol*K)Cv (J/mol*K)Cp (J/mol*K)Sound Spd. (m/s)Joule-Thomson (F/atm)Viscosity (uPa*s)Therm. Cond. (W/m*K)Phase

Auxiliary Data

Reference States, IIR Convention

Additional fluid properties


Auxiliary model

Miyamoto, H.; Watanabe, K., A thermodynamic property model for fluid-phase propane, Int. J. Thermophys., 2000, 21, 5, 1045-1072. [all data]

Auxiliary model and dielectric constant

Younglove, B.A.; Ely, J.F., Thermophysical properties of fluids. II. Methane, ethane, propane, isobutane and normal butane, J. Phys. Chem. Ref. Data, 1987, 16, 577-798. [all data]

Auxiliary model

Jaeschke, M.; Schley, P., Ideal-Gas Thermodynamic Properties for Natural-Gas Applications, Int. J. Thermophys., 1995, 16, 6, 1381-1392. [all data]

Auxiliary model and viscosity

Vogel, E.; Kuechenmeister, C.; Bich, E.; Laesecke, A., Reference Correlation of the Viscosity of Propane, J. Phys. Chem. Ref. Data, 1998, 27, 5, 947-970. [all data]

Auxiliary model and thermal conductivity

Marsh, K.; Perkins, R.; Ramires, M.L.V., Measurement and correlation of the thermal conductivity of propane from 86 to 600 K at pressures to 70 MPa, J. Chem. Eng. Data, 2002, 47, 4, 932-940. [all data]

Surface tension

Baidakov, V.G.; Sulla, I.I., Surface tension of propane and isobutane at near-critical temperatures, Russian Journal of Physical Chemistry, 1985, 59, 551-554. [all data]

Dielectric constant

Harvey, A.H.; Lemmon, E.W., Method for estimating the dielectric constant of natural gas mixtures, Int. J. Thermophys., 2005, 26, 1, 31-46. [all data]

Melting curve

Reeves, L.E., Jr., Melting curves of pressure-transmitting fluids, J. Chem. Phys., 1964, 40, 12, 3662-3666. [all data]

Additional Information

Thermal conductivity

Uncertainty in thermal conductivity is 3%, except in the critical region and dilute gas which have an uncertainty of 5%.


The uncertainty in viscosity varies from 0.4% in the dilute gas between room temperature and 600 K, to about 2.5% from 100 to 475 K up to about 30 MPa, and to about 4% outside this range.

Auxiliary model

N.B. all temperatures on IPTS-68

Dielectric constant

The uncertainty in dielectric constant is 0.05%.

Important Information About This Data

The data above are from an older version of the NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP version 7). We will be updating our site to use the newer version (version 10) of this database in the future. Information on REFPROP version 10 can be found on theREFPROP web page. REFPROP version 10 includes additional data and features not available from this site.