Optical Studies of Binary Mixture of Chloro Substituted Benzene and n-Hexane or Cyclohexane or 1,4-Dioxane

Abstract

Thermophysical properties of binary liquid mixtures are highly beneficial for getting information about the intermolecular interactions and geometrical effects in the system. The chloro-substituted benzene compounds like 2-chlorotoluene, 4-chlorotoluene, 1,3-dichlorobenzene also have wide range of industrial and biomedical areas. In present work, the refractive indices (n) of haloarenes, hydrocarbons, ether, and respective possible binary mixtures were experimentally determined over the entire compositions at T= (298.15-318.15) K. The mixtures selected were 2-chlorotoluene or 4-chlorotoluene or 1,3-dichlorobenzene (1) + n-hexane or cyclohexane or 1,4-dioxane (2) with its possible combinations. The Δn is positive for all binary mixtures at all investigated compositions. Different rules of mixing like Lorentz-Lorentz, Erying-John, Arago-Biot, etc. were also used to predict n values. The Δn values were also analyzed in terms of ongoing intermolecular interactions among the components of the selected system.