Contents - Index



R417A (also known as Isceon 59) is an azeotropic mixture consisting of 50 weight% R134a, 46.6% R125, and 3.4% n-Butane that is considered to be a replacement fluid for R22. It has a molar mass of 106.75 kg/kmol.  


Property data for R417A are provided using a generalized equation of state fitted by F-Chart Software using thermodynamic property data provided by REFPROP version 10 and the Honeywell Genetron Properties program (Ver. 1.4)  ( correlations are applicable for temperatures between 220 K and 470 K with pressures up to 50 MPa.  The reference state is saturated liquid at 0°C for which specific enthalpy and entropy are 200 kJ/kg and 1.0 kJ/kg-K, respectively.


Transport data are provided using correlations to the data provided in REFPROP and in following publication.


A. Heller M. H. Rausch F. Flohr A. Leipertz, A. P. Fröba

"Thermophysical Properties of the Refrigerant Mixtures R417A and R417B from Dynamic Light Scattering (DLS)"

Int J Thermophys (2012) 33:396-411



Fluid Property Information