Studies of Acoustical Properties of Methyl Salicylate in Different Solvents

Abstract

Acoustical properties in different compositions of methyl salicylate-
dioxane (MS-DO), methyl salicylate-methanol (MS-MeOH)
and methyl salicylate-benzene (MS-BN) were studied at 30°C using
a single crystal multifrequency interferometer operating at 3 MHz.
Various acoustical and thermodynamic parameters like isentropIc
compressibility (K_s), specific impedance (Z), intermolecular free
path (L_f), molar sound velocity (R), relaxation strength (r), the van
der Waals constant (b), internal pressure (π), relaxation time (τ),
classical adsorption coefficient   ((α/f²)_Cl), molecular diameter
(d_M), surface tension (σ), excess volume (V^E), excess viscosity
(η^E), excess sound velocity (U^E), excess Gibbs free energy of activation
of flow (ΔG^E) etc. were evaluated using experimental data
of sound velocity (U), density (ρ) and viscosity (η) at 30°C. The
results are interpreted in terms of interactions taking place in solutions.