Contents - Index



SulfurHexafluoride (SF6) provides high accuracy thermodynamic properties for sulfur hexafluoride (Molar mass =146.054 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 sulfur hexafluoride in the ideal gas state uses the equation given by:

Cole, W.A. and de Reuck, K.M. 

An Interim Analytic Equation of State for Sulfurhexafluoride 

International Journal of Thermophysics, Vol. 11, 1990, pp. 189-199


Reference State 

    h = 0 kJ/kg, s = 0 kJ/kg-K at 273.15 K, 101.325 kPa.  The reference state can be changed using the $Reference directive.


Range of applicability for equation of state:

   222.38 K < T <  750 K

0 < P < 60 MPa


Thermoconductivity and viscosity correlations were fit to tabular data provided in:

"Handbook of Physical Properties of Liquids and Gases"

Natan B. Vargaftik, Yurii K. Vinogradov, and Vadim S. Yargin

3rd Augmented and Revised Edition

Begell House, Inc


Range of applicability for transport function correlations:

Gas-phase viscosity:  222 K to 750K

Liquid-phase viscosity: 222 K to 318.7 K

Gas-phase thermal conductivity: 220 K to 750 K

Liquid-phase thermal conductivity: 222 K to 318.7 K


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