Contents - Index



R236fa  provides high accuracy thermodynamic properties for 1,1,1,3,3,3-hexafluoropropane (C3H2F6,  MW 152.0384 g/gmole, CAS No. 690-39-1) using the Fundamental Equation of State developed by:


Jiang Pan, Xinfang Rui, Xiaodong Zhao, Liming Qui

An equation of state for the thermodynamic properties of 1,1,1,3,3,3-hexafluoropropane (HFC-236fa)

Fluid Phase Equilibria, Vol. 321, (2012), pp. 10-16


The correlation is valid for temperatures in the range between triple point at 179.6 K to 400 K for pressures less than 70 MPa.  


Enthalpy and entropy values are referenced to 200 kJ/kg and 1 kJ/kg-K, respectively,  for saturated liquid at 0C. 


Liquid viscosity data are provided with the correlation from

Laesecke, A and Defibaugh, D.R.,

Viscosity of 1,1,1,2,3,3,3-Hexafluoropropane and 1,1,1,3,3,3-Hexafluouropropane at Saturated Liquid Conditions from 262 K to 353 K

J.Chem. Eng. Data, 1996, Vol. 41, pp. 59-62


Liquid Conductivity data are provided from:

Latini, G, Passerini, G.,  and Polonara, F., Int. J. of Thermophysics, Vol 17, NO. 1, p. 85, 1996

as shown in Thermal Conductivity 27, DEStech Publications, Inc, ISBN 1-932078-34-8

Proceedings of the 27th International Thermal Conductivity Conference and the 15th International Thermal Expansion Symposium, October 26-29, 2003, Knoxville, TN


Viscosity and thermal conductivity data for the gaseous state are based on curve fits to data provided by the NIST WebBook site: for temperatures between 179.6 K and 370 K.


Surface tension data are provided using the information in:

Mulero, A., Cachadina, I, and Parra, M.

"Recommended Correlations for the Surface Tension of Common Fluids"

J.Phys. Chem Ref. Data, Vol. 41, No.4, 2012



Note:  Versions prior to 9.393 used older and less accurate correlations for R235fa based on the Martin-Hou equation of state.  These property data can still be accessed with fluid name R236fa_MH.


Fluid Property Information