Dielectric and thermodynamic behavior of the system 1,1,1-trichloroethane-benzene-o-dichlorobenzene

Abstract

Measurements of the dielectric permittivity and loss at 20°at various wavelengths in the microwave region are reported for mixtures containing 1,1,1-trichloroethane, benzene, and o-dichlorobenzene. These data are fitted to a microscopic molecular model which assumes that the dielectric behavior is a superposition of Debye processes.The model parameters are interpreted in terms of molecular and liquid structure. The effect of long range dipole-dipole forces on the static and dynamic dielectric behavior is considered in light of existing theories of the internal field. Boiling point diagrams and heats of mixing are reported for this system in order to check for the existence of strong specific short range forces.

Study on Excess Molar Enthalpies and Excess Molar Volumes of the Binary Systems 1,2-Dichlorobenzene + (Benzene, Hexane, 1-Chlorohexane) and 1,3-Dichlorobenzene + (Benzene, Hexane, 1-Chlorohexane) at 298.15 K

“…Some H m E and V m E data have been published in the literature for 1,2-dichlorobenzene + benzene and 1,3dichlorobenzene + benzene at different temperatures. Turner et al 14 reported measurements of H m E for the system 1,1,1-trichloroethane + benzene + 1,2-dichlorobenzene at T ) 293.15 K. Mahl et al 15 H m E values for 1,2-dichlorobenzene + hexane and 1,3dichlorobenzene + hexane are positive for all of the compositions, and the maximum values are slightly higher for 1,2-dichlorobenzene + hexane. A different situation is found for V m E .…”

“…Some and data have been published in the literature for 1,2-dichlorobenzene + benzene and 1,3-dichlorobenzene + benzene at different temperatures. Turner et al reported measurements of for the system 1,1,1-trichloroethane + benzene + 1,2-dichlorobenzene at T = 293.15 K. Mahl et al measured for 1,2-dichlorobenzene + benzene at 308.15 K. Otin et al determined excess enthalpies of 1,2- dichlorobenzene, 1,3-dichlorobenzene + benzene at 303.15 K, and Dhillon published excess volumes of 1,2-dichlorobenzene + benzene at 303.15 K and 308.15 K.…”