Contents - Index



ISOPENTANE provides high accuracy thermodynamic properties for isopentane (Molar mass =72.115 g/mole) using the Fundamental Equation of State, as described by Reiner Tillner-Roth, "Fundamental Equations of State", Shaker, Verlag, Aachan, 1998.  The correlation is based on data from:


Polt, A., Platzer, B., and Maurer, G.

"Parameter der thermischen Zustandsgleichung von Bender fuer 14 mehratomige reine Stoffe,"

Chem. Tech. (Leipzig), Volume 44, Number 6, pp. 216-224, 1992.


The parameters for the fundamental equation of state were provided by Professor Steve Penoncello, College of Engineering, University of Idaho, Moscow, Idaho, 83844-1011


Reference State 

    h = 0 kJ/kg, s = 0 kJ/kg-K at 298.15 K, 1 kPa.  The reference state can be changed using the $Reference directive.


Range of applicability for equation of state:

   273 K < T <  553 K

0 < P < 7.5 MPa


Transport properties are provided using correlations given in:

Yaws, Carl L., ed. Chemical Properties Handbook. New York: McGraw-Hill, 1999. 


Surface tension data are provided using the information in:

Mulero, A., Cachadina, I, and Parra, M.

"Recommended Correlations for the Surface Tension of Common Fluids"

J.Phys. Chem Ref. Data, Vol. 41, No.4, 2012



Fluid Property Information