Contents - Index



n-HEXANE provides high accuracy thermodynamic properties for normal hexane (Molar mass =86.172 g/mole) using the Fundamental Equation of State, as described by: 


Span, R. and Wagner, W.

"Equations of State for Technical Applications:  II Results for Non-Polar Fluids" 

Int. J. of Thermophysics, Vol. 24, No. 1, Jan. 2003


The specific heat of n-hexane in the ideal gas state is determined from

Jaeschke, M. and Schley, P.

"Ideal-Gas Thermodynamic Properties for Natural-Gas Applications"

Intl. Journal of Thermophysics, Vol. 16, No. 6, pp. 1381-1385, (1995)


Reference State 

    h = 0 kJ/kg, s = 0 kJ/kg-K at 298.15 K, 101.325 kPa.  The reference state can be changed using the $Reference directive.


Range of applicability for equation of state:

   222 K < T <  644 K

0 < P < 55 MPa


Viscosity and thermal conductivity are by regressing values obtained from the NIST Standard Reference Database 14, National Institute of Standards and Technology, E.W. Lemmon, A.P. Peskin, M.O. McLinden, and D.G. Friend, (2000).  The ranges of applicability for transport function correlations are:


Gas-phase viscosity: 222 K to 644 K

Liquid-phase viscosity: 222 K to 502 K

Gas-phase thermal conductivity: 222 K to 644 K

Liquid-phase thermal conductivity: 222 K to 502 K


Surface tension data are provided through a correlation developed by:

G.R. Somayajulu

"A Generalized Equation for Surface Tension from the Triple Point to the Critical Point"

International Journal of Thermophysics, Vol. 9, No. 4, 1988



Fluid Property Information