Liquid-Liquid Equilibrium, Densities, Viscosities, Refractive Indices, and Excess Properties of the Ternary System Water + 4-Hydroxy-4-methyl-2-pentanone + Benzyl Alcohol at 298.15 K

Abstract

Liquid-liquid equilibrium data are reported for the water + 4-hydroxy-4-methyl-2-pentanone + benzyl alcohol ternary system at 298.15 K. Data for the binodal curve have been determined by the cloud-point method. Tie lines were established by correlating the refractive index of the binodal curve as a function of composition and were satisfactorily correlated by the Othmer and Tobias method on a mass-fraction basis. In addition, density, viscosity, and refractive index isolines were obtained throughout the miscible region at 298.15 K. From the experimental densities and viscosities, molar excess volume and viscosity deviations from a mole fraction average were calculated for the ternary system. The extracting capability of benzyl alcohol for separating 4-hydroxy-4-methyl-2-pentanone from its aqueous solutions was investigated in terms of distribution coefficients and selectivities.