SULFURHEXAFLUORIDE
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
Thermal conductivity 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
Gas-phase viscosity is from:
"Recommended Values for the Viscosity in the Limit of Zero Density and its Initial Density Dependence for Twelve Gases and Vapors: Revisited from Experiment
between 297 K and 691 K"
Eckhard Vogel
J. Phys. Chem. Ref. Data 49, 043102 (2020); https://doi.org/10.1063/5.0023688
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