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The current study works out on densities 'ρ', ultrasonic speeds of sound 'u' of binary mixtures of propiophenone with n-alcohols e.g., 1-propanol, 1-butanol and 1-pentanol measured over the entire composition range at 303.15 to 318.15 K and at atmospheric pressure 0.1 MPa. The worked out experimental data has been used to calculate various thermodynamic excess parameters like excess molar volume (V E ), excess ultrasonic velocity (U E ), excess acoustic impedance (Z E ), excess intermolecular free-length (Lf E ), deviation in isentropic compressibility (∆Ks), deviation in acoustic impedance (∆Z) and the computed results were fitted with the Redlich Kister equation to estimate the binary coefficients and standard deviation between experimental and calculated data. Partial molar volume of the binary mixtures was calculated to understand more of the intermolecular reactions in the above binary mixtures.

Abstract:Densities ρ, viscosities η and ultrasonic speeds of soundof binary mixtures of Propiophenone (PPH)with 2-Alkoxy Ethanols

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Densities and viscosities of binary mixtures of Propiophenone with Aniline, N-methylaniline, N, N- dimethylaniline, N, N- diethylaniline were measured over the entire composition range at T = (303.15 to 318.15) K (with 5K interval) and atmospheric pressure. Experimental data were used to calculate the deviation of viscosity Δη, excess Gibb’s free energy G*E activation of viscous flow for each binary system, and these excess thermodynamic properties were fitted to the Redlich-Kister polynomial equation to obtain the fitting coefficients and standard deviations. McAllister’s three-body /four-body interaction models were used for the correlation of viscosity data. The studied systems exhibit good intermolecular interactions due to hydrogen ion transfer and charge dispersion in the carbonyl group and NH2 groups of Aniline and Alkyl Substituted Anilines. Experimental results are useful in various pharmaceutical industries.