Contents - Index



Fluid properties for HFE7100 based on the Martin-Hou equation of state has been deprecated because it was found that it did not provide accurate properties for low-temperature liquids.  Incompressible fluid HFE7100 has been added in its place.  The former equation of state for HFE7100 can still be accessed with fluid name HFE7100_MH for reasons of backward compatibility.




HFE7100 provides approximate thermodynamic property data for hydrofluoroether 7100, MW 250 g/gmole).  This fluid is known by its trade name 3M HFE 7100 NOVEC Engineered Fluid and as  methoxy-nonafluorobutane and C4F9OCH3. HFE-7100 consists of two inseparable isomers (methy nonafluoroisobutyl ether and methyl non-afluorobutyl ether)  according to 3M but it is treated as a pure fluid with chemical composition here.  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 on data provided by 3M and data reported by:


B. An, Y. Duan, F. Yang, and Z. Yeng

"pvT Properties of HFE 7100 in the Gaseous Phase"

J. Chem. Eng. Data, 2015, 60, pp. 3289-3295


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 250 K and 470 K for pressures up to 10 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 HFE7100 are provided for temperatures between 273 K and 420 K based on information provided by Rausch et al. (2015) and  by 3M


Transport data for the vapor phase for temperatures between 250 and 380 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


Fluid Property Information