Measurement of physical properties for the molecular interaction of binary mixtures of cumene with aromatic hydrocarbons

Physical properties such as density, speed of sound, and viscosity play a central role in evaluating the excess properties of chemical mixtures. In this study, the intermolecular interaction of isopropyl benzene (cumene) and aromatic hydrocarbons were examined from the measurement of physicochemical properties (density, sound velocity and viscosity) at temperature 298.15K and 3 MHz. The experimental data were used to calculate the adiabatic compressibility (β ad ), relaxation time (τ), interaction parameter (χ), Surface tension (σ), Wada's constant (W), Rao's constant (R), and in liquid mixtures, the extra functions show a greater sensitivity to interactions between molecules. The difference between the experimental thermodynamic and acoustic parameters mixture (A EXP ) and those corresponding to an ideal mixture (A IDEAL ) was computed using the measured thermodynamic parameters so as to see into the liquid combinations' impracticality. Also excess parameters such as deviations in sound velocity (Δu), deviations in viscosity (Δη), excess relaxation time (τ E ) and excess surface tension (σ E ). The correlations of these excess properties were made with the Redlich–Kister polynomial equations. The results indicate the presence of weak interactions between isopropyl benzene (cumene) and aromatic hydrocarbon molecules. It is observed that the interactions depend on the number and position of the methyl groups in these aromatic hydrocarbons. The weak interaction between the molecules of the binary mixture is observed.