Add time:08/26/2019         Source:sciencedirect.com

Densities (ρ), viscosities (η), and speeds of sound (u) of the ternary mixture (1-heptanol + trichloroethylene + methylcyclohexane) and the involved binary mixtures (1-heptanol + trichloroethylene), (1-heptanol + methylcyclohexane), and (trichloroethylene + methylcyclohexane) at 298.15 K were measured over the whole composition range. The data obtained are used to calculate excess molar volumes (VE), excess isobaric thermal expansivity (αE), viscosity deviations (Δη), excess Gibbs free energies of activation of viscous flow (ΔG∗E), and excess isentropic compressibilities (κSE) of the binary and ternary mixtures. The data of the binary systems were fitted to the Redlich–Kister equation while the best correlation method for the ternary system was found using the Nagata equation. Viscosities, speeds of sound and isentropic compressibilities of the binary and ternary mixtures have been correlated by means of several empirical and semi-empirical equations. The best correlation method for viscosities of binary systems is found using the Iulan et al. equation and for the ternary system using the McAllister equation. The best correlation method for speeds of sound and isentropic compressibilities of the binary systems is found using the IMR and for the ternary system using the IMR and JR.

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