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For the separation of 2,2,2-trifluoroethanol in water, two alcohols and two ketones were chosen as extractants for experiments at 101.3 kPa and 298.2 K. The liquid−liquid equilibrium data for water + 2,2,2-trifluoroethanol + (4-methyl-2-pentanol, methyl isobutyl ketone, methyl isopropyl ketone, and benzyl alcohol) were measured under these conditions. The separation effects of the four solvents were assessed by the distribution coefficient (D) and the separation factor (S). Meantime, the interaction parameters were obtained by fitting the experimental data using NRTL and UNIQUAC models, and both values of AAD and rmsd were less than 0.43%. The GUI-MATLAB series of topological analysis tools were used to check the accuracy of the measured values with the binary interaction parameters.

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To separate and purify epichlorohydrin from water, the liquid–liquid equilibrium (LLE) data of water + epichlorohydrin + solvents (n-propyl acetate, 2-ethyl-1-hexanol) at 303.2, 313.2, and 323.2 K were measured at 101.3 kPa. The extraction ability of an extractant was evaluated using the distribution coefficient (D) and selectivity factor (S). Simultaneously, the Bachmann and Hand equations were used to verify the accuracy of the liquid–liquid equilibrium data. The NRTL and UNIQUAC models successfully correlated the LLE data, and the root mean square deviation for each model was less than 0.50%. Finally, GUI-MATLAB tools were employed to confirm that the regression parameters of the thermodynamic model areconsistent.