Densities, viscosities, and refractive indexes for {C 2H 5CO 2(CH 2) 2CH 3+C 6H 13OH+C 6H 6} at T=308.15 K

Abstract

In this work we present densities, kinematic viscosities, and refractive indexes of the ternary system {C 2H 5CO 2(CH 2) 2CH 3+C 6H 13OH+C 6H 6} and the corresponding binary mixtures {C 2H 5CO 2(CH 2) 2CH 3+C 6H 6}, {C 2H 5CO 2(CH 2) 2CH 3+C 6H 13OH}, and {C 6H 13OH+C 6H 6}. All data have been measured at T=308.15 K and atmospheric pressure over the whole composition range. The excess molar volumes, dynamic viscosity deviations, and changes of the refractive index on mixing were calculated from experimental measurements. The results for binary mixtures were fitted to a polynomial relationship to estimate the coefficients and standard deviations. The Cibulka equation has been used to correlate the experimental values of ternary mixtures. Also, the experimental values obtained for the ternary mixture were used to test the empirical methods of Kohler, Jacob and Fitzner, Colinet, Tsao and Smith, Toop, Scatchard et al., and Hillert. These methods predict excess properties of the ternary mixtures from those of the involved binary mixtures. The results obtained for dynamic viscosities of the binary mixtures were used to test the semi-empirical relations of Grunberg–Nissan, McAllister, Ausländer, and Teja–Rice. Finally, the experimental refractive indexes were compared with the predicted results for the Lorentz–Lorenz, Gladstone–Dale, Wiener, Heller, and Arago–Biot equations. In all cases, we give the standard deviation between the experimental data and that calculated with the above named relations.