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Critical Locus of Aqueous Solutions of Sodium Chloride

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Abstract

Experimental data reported in the literature indicate a strong dependence of the critical temperature of aqueous solutions of sodium chloride on salt concentration, especially in the limit of pure water. Critical pressures and densities also show strong dependences on salt concentration. We propose a new set of equations for the critical locus and compare the results with evaluations reported previously by a number of investigators. The new equations yield a better description of the experimental data from the limit of pure water to the highest salt concentration for which data are available (0.3 mass fraction of sodium chloride).

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Authors and Affiliations

  1. Institute for Physical Science and Technology and Department of Chemical Engineering, University of Maryland, College Park, Maryland, 20742, U.S.A

    A. A. Povodyrev, M. A. Anisimov & J. V. Sengers

  2. Physical and Chemical Properties Division, National Institute of Standards and Technology, Gaithersburg, Maryland, 20899, U.S.A

    J. V. Sengers & J. M. H. Levelt Sengers

  3. Chemical and Analytical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee, 37831, U.S.A

    W. L. Marshall

Authors
  1. A. A. Povodyrev
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  2. M. A. Anisimov
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  3. J. V. Sengers
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  4. W. L. Marshall
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  5. J. M. H. Levelt Sengers
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Povodyrev, A.A., Anisimov, M.A., Sengers, J.V. et al. Critical Locus of Aqueous Solutions of Sodium Chloride. International Journal of Thermophysics 20, 1529–1545 (1999). https://doi.org/10.1023/A:1021449323833

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  • DOI: https://doi.org/10.1023/A:1021449323833

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