Thermo-acoustic studies of ethyl propionate with propan-2-ol at different temperatures using ultrasonic technique

Abstract

Binary/ternary mixtures are extensively used in manufacturing as they create a distinct reaction or structures when they are mixed with two or more liquids rather than the single one. The learning of thermodynamic properties of binary liquid mixtures has been evidenced to be a suitable tool in elucidating the interactions that are functioning between component molecules. In this investigation, the ultrasonic velocity, density and viscosity in ethyl propionate with propan-2-ol were measured at different temperatures of 308 K, 313 K, 318 K, 323 K, 328 K and 333 K. Ethyl propionate is used to manufacture various propionates used in the reduction of pharmaceuticals, anti-fungal agents, dyes, artificial flavours and perfumery synthetics. Propan-2-ol is used in the paints industry as a paint thinner and paint remover and is also used as a solvent in many industries. Acoustical parameters such as acoustic impedance (Z), adiabatic compressibility (βa), Intermolecular free length (Lf), relaxation time (τ), internal pressure (πi), Gibb’s free energy (Δ G) and enthalpy (H) have been computed from the above primary parameters. The variation of derived parameters was used to examine the structural changes and scope of interactions between the binary molecules and the obtained results have been discussed in detail.