Thermodynamic Properties of Sulfur Hexafluoride

Temperature Pressure Density Volume Int. energy Enthalpy Entropy Cp Sound speed Joule-Thomson 

The values in these tables were generated from the NIST REFPROP software (Lemmon, E. W., McLinden, M. O., and Huber, M. L., NIST Standard Reference Database 23 Reference Fluid Thermodynamic and Transport Properties—REFPROP, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, Md., 2002, Version 7.1). The primary source for the thermodynamic properties is de Reuck, K. M., Craven, R. J. B., and Cole, W. A., Report on the Development of an Equation of State for Sulphur Hexafluoride, lUPAC Thermodynamic Tables Project Centre, London, 1991. Validated equations for the viscosity and thermal conductivity are not currently available for this fluid. 

The uncertainties of the equation of state are 0.1% in density, 2% in heat capacity, and 5% in the speed of sound, except in the critical region. 

2-31 Enthalpy -concentration diagram for aqueous sulfuric acid at 1 atm. Reference states enthalpies of pure-liquid components at 32° F and vapor pressures are zero. NOTE It should be observed that the weight basis includes the vapor, which is particularly important in the two-phase region. The upper ends of the tie lines in this region are assumed to be pure water. Hougen and Watson, Chemical Process Principles, part 7, Wiley, New York, 1943.) 

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Guder, C., and Wagner, W, A Reference Equation of State for the Thermodynamic Properties of Sulfur Hexafluoride (SF ) for Temperatures from the Melting Line to 625 K and Pressures up to 150 MPa,. Phys. Chem. Ref. Data 38, 33, 2009. 

TABLE 2-347 Thermodynamic Properties of Saturated Sulfur Hexafluoride (SF ) ... 

Strothmann, B. Fischer, K. Gmehling, J. Measurement of thermodynamic properties for the system sulfur hexafluoride +... 

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