Ultrasonic studies of some derivatives of 6-ethylbenzene-1,3-diol in 1,4-dioxane

Ultrasonic velocity, density and viscosity of solutions of some derivatives of 6-ethylbenzene-1,3-diol in 1,4-dioxane were measured at 308.15 K. From these experimental data, various acoustical properties such as specific impedance (Z), isentropic compressibility (κs), Rao’s molar sound function (Rm), the van der Waals constant (b), molar compressibility (W), intermolecular free length (Lf), relaxation strength (r), relative association (RA), free volume (Vf), etc. were calculated. The results are interpreted in terms of molecular interactions occurring in the solutions.