Modeling vapor-liquid-liquid-solid equilibrium for acetone-water-salt systems

Kaj Thomsen, Martin Due Olsen, Lucas F. F. Corrêa

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A compilation of available experimental data for acetone-water mixtures with the reciprocal salt system Na+, K+ || Cl, SO42− is presented. Significant inconsistencies among experimental data are pointed out. New freezing point measurements are reported for the binary acetone-water system at 12 different compositions. UNIQUAC parameters are determined on the basis of the available data from literature. Modeling results are presented. Vapor-liquid, liquid-liquid, and solid-liquid equilibria together with thermal properties are reproduced well by the model using only 14 parameters. The major drawback of the model is that the calculated liquid-liquid equilibrium regions of systems with KCl and NaCl are larger than the experimentally determined regions. The model is valid in the temperature range from −16 to 100 °C.
Original languageEnglish
JournalPure and Applied Chemistry
Issue number10
Pages (from-to)1663–1672
Publication statusPublished - 2020


  • Mixed solvent salt solution
  • Extended UNIQUAC model
  • Data compilation


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