Densities, Viscosities, and Refractive Indices for Binary and Ternary Mixtures of Diisopropyl Ether, Ethanol, and Methylcyclohexane

Abstract

Densities, viscosities, and refractive indices of the ternary system diisopropyl ether + ethanol + methylcyclohexane at T = 298.15 K and the binary systems diisopropyl ether + ethanol, diisopropyl ether + methylcyclohexane, and ethanol + methylcyclohexane were measured at T = (288.15, 298.15, and 308.15) K and atmospheric pressure over the whole composition range. Densities were determined using a vibrating-tube density meter. Viscosities were measured with an automatic Ubbelholde capillary viscometer. Refractive indices were measured using a digital Abbe-type refractometer. Excess molar volumes VE, deviations in the viscosity Δη, and deviations in the refractive index ΔnD for the mixtures were derived from experimental data. The binary data of VE, Δη, and ΔnD were correlated as a function of the mole fraction by using the Redlich−Kister equation. For the ternary data, several polynomial equations have been tested to minimize the set of parameters for adequate correlation.