Thermophysical properties for the binary mixtures of tert-amyl methyl ether with n-hexane, cyclopentane, benzene and m-xylene at different temperatures

Abstract

Densities (ρ), viscosities (η), refractive indices (nD) and speeds of sound (u) for binary mixtures of tert-amyl methyl ether (TAME) with n-hexane, cyclopentane, benzene and m-xylene were measured over entire range of composition at atmospheric pressure and several temperatures (293.15, 303.15 and 313.15K). Excess molar volume (VE), deviation in refractive index (∆nD), excess isentropic compressibility (κsE), partial molar volume (V¯), excess speed of sound (uE), excess free length (LfE), isentropic compressibility (κs) and deviation in viscosity (∆lnη) were calculated from the experimental data. The speeds of sound in present mixtures were estimated using Jacobson free length theory (FLT) and Schaffs collision factor theory (CFT) to determine the precision for their predicting ability relative to experimentally determined values of speed of sound. The viscosity data has been analyzed on the basis of corresponding states approach. A Redlich–Kister type polynomial equation was used to fit the excess/deviation parameters to derive the binary coefficients and standard deviations. A qualitative analysis of these parameters reveals the presence of specific molecular interactions and predicts the mixing behavior of solution components.