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Thermophysical Properties of Selected Fluids at Saturation



Eric W. Lemmon


These tables give thermodynamic and transport properties of a variety of fluids, as generated from the equations of state presented in the references below. The properties tabulated are pressure (P), density (ρ), enthalpy (H), entropy (S), isochoric heat capacity (Cv), isobaric heat capacity (Cp), speed of sound (u), viscosity (η), thermal conductivity (λ), and static dielectric constant (D). All extensive properties are given on a mass basis. Not all properties are included for every substance. The references should be consulted for information on the uncertainties. Values are given along the saturation line. The first two points are the properties at the triple point. The final line gives the properties at the critical point. Two lines are given for each temperature (except at the critical point); the first line gives the values of the liquid phase (note the high density) and the second line gives the values of the vapor phase (at low densities). Ammonia uses a reference state based on zero energy and entropy at the triple point; benzene, carbon monoxide, ethylene, hydrogen sulfide, sulfur dioxide, and toluene use a reference state of zero enthalpy and entropy at the saturated liquid state at the normal boiling point; butane, isobutane, ethanol, propylene, R-134a, and sulfur hexafluoride use a reference state of 200 kJ kg-1 and 1 kJ kg1- K-1 at -40 °C. Additional calculations at state points not listed below and for fluids not contained here can be obtained at the NIST Chemistry WebBook website (, or by using the NIST Standard Reference Data program REFPROP (
CRC Handbook of Chemistry and Physics


Lemmon, E. (2010), Thermophysical Properties of Selected Fluids at Saturation, CRC Handbook of Chemistry and Physics (Accessed December 9, 2023)
Created December 31, 2009, Updated February 19, 2017