Abstract
Volumetric and acoustic analysis is used to study the interaction between sodium ethylparaben and ethylene glycol and propylene glycol as a function of temperature. Taking densities and speed of sound measurements at 0.1MPa and T=303.15 and 308.15K completes the approximation of apparent molar volume and apparent molar isentropic compression of glycols in aqueous solutions of sodium ethylparaben. At 303.15K and 308.15K, various parameters such as acoustic impedance, intermolecular free length, adiabatic compressibility, relaxation time, ultrasonic attenuation, relative association, and Gibbs’s free energy of glycols with sodium methyl in aqueous medium were investigated using density, viscosity, and sound speed data. Acoustic parameters such as adiabatic compressibility and intermolecular free lengths have the same behaviour as these assessed parameters, however acoustic impedance has the opposite behaviour. Between the solute and the solvent, there is a strong contact.
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