Contents - Index



HFE7500 provides approximate thermodynamic property data for hydrofluoroether 7500,  MW 414 g/gmole).  This fluid is known by its trade name 3M HFE 7500 NOVEC Engineered Fluid. This fluid is also referred to as 3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-trifluoromethyl-hexane, C3F7CF(OC2H5)CF(CF3)2, with CAS# 297730-93-9.  The thermodynamic properties are obtained using the Martin-Hou equation of state (A.I.Ch.E. Journal, 1:142, 1955) as fitted by S.A. Klein based data provided by 3M and reported by:


G. Marchionni, P. Maccone, and G. Pezzin

"Thermodynamic and other physical properties of several hydrofluoro-compounds"

Journal of Fluorine Chemistry, 118, 2002, pp. 149-155


M.H. Rausch, L. Kretschmer, S. Will, A. Leipertz, and A. Froba

"Density, Surface Tension, and Kinematic Viscosity of Hydrofluoroethers HFE-7000, HFE-7100, HFE-7200, HFE-7300 and HFE-7500"

J. Chem. Eng. Data, 2015, 60, pp.3759-3765


The properties are valid for temperatures between 273 K and 540 K for pressures up to 20 MPa.


The IIR reference is used for specfic enthalpy and entropy, i.e., h=200 kJ/kg and s=1 kJ/kg-K for saturated liquid at 273.15 K.


Transport properties for liquid HFE7500 are provided for temperatures between 273 K and 420 K based on information provided by Rausch et al. and  by 3M at 


Transport data for the vapor phase for temperatures between 270 and 420 K are estimated using a corresponding states approach as suggested in:


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



NOTE:  Property data for liquid HFE7500 are also provided in the Incompressible Fluid library with fluid NOVEC_7500.  The data for NOVEC_7500 are provided primarily from 3M



Fluid Property Information