Contents - Index



R512A is an azeotropic mixture consisting of 5 weight% R134a and 95% R152a.  It is considered to be a replacement fluid for R134a  It has a molar mass of67.24 kg/kmol. It is marketed by Ecogas.


Property data for463A are provided using a generalized equation of state fitted by F-Chart Software using thermodynamic property data generated by REFPROP.  The model is applicable for temperatures between 180 K and 490 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

The viscosity and thermal conductivity were estimated using the corresponding states approach described the following references with propane as the reference fluid.


Klein, S.A., McLinden, M.O., and Laesecke , A.,

"An improved extended corresponding states method for estimation of viscosity of pure refrigerants and mixtures",  

Int. J. of Refrigeration, 20, pp. 208-217, 1997


McLinden et al., 

"An extended corresponding states model for the thermal conductivity of refrigerants and refrigerant mixtures",

Int. J. of Refrigeration, 23, pp. 43-63, 2000


Surface tension data were fit to data obtained from the REFPROP. 


Fluid Property Information