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Liquid–Liquid Equilibria in Ternary Systems of Hexafluoroisopropanol + Perfluorocarbon + Water or Methanol at 298.15 K

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Department of Physical Chemistry, Institute of Chemical Technology, Prague, 166 28 Prague 6, Czech Republic
Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague, Czech Republic
*Tel: +420 220 444 039. E-mail: [email protected]
Cite this: J. Chem. Eng. Data 2014, 59, 11, 3510–3516
Publication Date (Web):September 19, 2014
https://doi.org/10.1021/je500455u
Copyright © 2014 American Chemical Society

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    Abstract

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    Liquid–liquid equilibrium data for ternary systems hexafluoroisopropanol + perfluorocarbon (namely perfluoro(n-hexane) or perfluoro(methylcyclohexane)) + water or methanol were determined at 298.15 K. Water, methanol, and other polar solvents exhibit very low miscibility with perfluorocarbons. In contrast, hexafluoroisopropanol is fully miscible with water, methanol, and perfluorocarbons. Consequently, the determined ternary liquid–liquid equilibrium diagrams possess only one heterogeneous binary subsystem. They are of the type 1. Due to specific properties of perfluorocarbons, a special procedure for determination of the liquid–liquid equilibrium in the studied systems was developed. The ternary liquid–liquid equilibrium diagrams were found to be almost identical for perfluoro(n-hexane) and perfluoro(methylcyclohexane) showing that the structure of perfluorocarbon component has minimal influence on the miscibility behavior.

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    Cited By

    This article is cited by 1 publications.

    1. Kehui Gao, Andreas Köster, Monika Thol, Jiangtao Wu, Eric W. Lemmon. Equations of State for the Thermodynamic Properties of n-Perfluorobutane, n-Perfluoropentane, and n-Perfluorohexane. Industrial & Engineering Chemistry Research 2021, 60 (47) , 17207-17227. https://doi.org/10.1021/acs.iecr.1c02969

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