Contents - Index



SES36 provides approximate thermodynamic properties for the mixture of R365mfc (1,1,1,3,3-pentafluorobutane) and perfluoropolyether, which has the trade name of SES36.  This mixture is treated as a pseudo-pure fluid with a molar mass of 184.85 g/mol.  Only thermodynamic property data are available and they are based on the equation of state in: 


Monika Thol, Eric W. Lemmon, Prof. Dr.-Ing. Roland Span

Equation of State for a Refrigerant Mixture of R365mfc (1,1,1,3,3-Pentafluorobutane) and GaldenŽ HT 55 (Perfluoropolyether)

Pre-publication paper provided by Ms.Thol (


The correlation is valid for temperatures in the range between 200 K to 1500 K for pressures less than 50 MPa.  


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


Note that there are several typographical errors in the paper.


Coefficient n_11 in Table 1 should be 2.46053

Equation 1.3 should have b_2*tau in the exponential term.

b_2 should be 2197 K


Transport properties and surface tension are derived from data reported by: 

A. P. Froba, H. Kremer, A. Leipertz, F. Flohr,4 and C. Meurer

Thermophysical Properties of a Refrigerant Mixture of R365mfc (1,1,1,3,3-Pentafluorobutane) and Galden HT 55 (Perfluoropolyether)

International Journal of Thermophysics, Vol. 28, No. 2, April 2007 


Viscosity data are provided for temperatures between 253 K and 415 K

Liquid thermal conductivity data are provided for temperatures between 298 K and 440 K.

Gas-phase thermal conductivity data are provide for temperatures between 418 and 447 K.



Fluid Property Information