Liquid−Liquid Equilibria in Ternary Systems of Hexafluoroisopropanol plus Perfluorocarbon plus Water or Methanol at 298.15 K

0435742 - ÚOCHB 2015 RIV US eng J - Journal Article
Strejc, M. - Řehák, K. - Beier, Petr - Morávek, P.
Liquid−Liquid Equilibria in Ternary Systems of Hexafluoroisopropanol plus Perfluorocarbon plus Water or Methanol at 298.15 K.
Journal of Chemical and Engineering Data. Roč. 59, č. 11 (2014), s. 3510-3516. ISSN 0021-9568. E-ISSN 1520-5134
Institutional support: RVO:61388963
Keywords : liquid-liquid equilibrium * perfluorocarbons * hexafluoroisopropanol
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 2.037, year: 2014

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 liquidliquid 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 liquidliquid equilibrium in the studied systems was developed. The ternary liquidliquid 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.
Permanent Link: http://hdl.handle.net/11104/0239687