Estimation of some important thermodynamic properties of organic liquid mixtures at various temperatures (3-pentanol, benzyl salicylate, ethyl salicylate and methyl salicylate)

This study investigates the thermodynamic and transport properties of binary mixtures of 3-pentanol with methyl salicylate, ethyl salicylate, and benzyl salicylate at selected compositions and temperatures from 303.15 K to 313.15 K. The excess molar volume, excess isentropic compressibility, deviation in viscosity, and excess Gibbs free energy of activation of viscous flow were determined from measured values of densities, viscosities, and speeds of sound. The results reveal the strength of hydrogen bonding interactions between the 3-pentanol molecules hydroxyl group and the salicylate derivative molecules’ -OH groups. Furthermore, the Prigogine-Flory-Patterson (PFP) theory is applied to identify the most predominant molecular interaction, and the Jouyban-Acree model results are discussed in terms of mean relative deviation (MRDs) and individual relative deviation (IRD) between calculated and experimental densities, speeds of sound and viscosities as an accuracy criterion [ABSTRACT FROM AUTHOR]