Densities, rho, viscosities, eta, and refractive indices, n(D), of binary mixtures containing n-hexane + alpha-pinene (2,6,6-trimethylbicyclo[3.1.1]hept-2-ene), + beta-pinene (6,6-dimethyl-2-methylene bicyclo[3.1.1]heptane), + p-cymene (1-methyl-4-[1-methylethyl]benzene), + (S)-(-)-limonene [(-)-1-methyl-4-(l-methylethenyl)cyclohexene], + 1,8-cineole (1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane), and + linalool (3,7-dimethyl-1,6-octadien-3-ol) were determined at 298.15 K and at atmospheric pressure using a digital density meter, a Schott viscosity measuring system, and an Abbe refractometer, respectively. The excess molar volumes, V-m(E), deviations in viscosities, Deltaeta, and deviations in molar refractions, DeltaR, calculated from experimental measurements, are always negative, with the exception of the V-m(E) curve referring to the hexane + linalool mixture, which shows an inversion of sign. Results were fitted to the Redlich-Kister polynomial and qualitatively discussed in terms of molecular interactions. The McAllister multibody interaction model was used to correlate the kinematic viscosities of liquid mixtures with mole fractions.
Densities, viscosities, and refractive indices of binary mixtures containing n-hexane + components of pine resins and essential oils
Comelli F;Ottani S;
2002
Abstract
Densities, rho, viscosities, eta, and refractive indices, n(D), of binary mixtures containing n-hexane + alpha-pinene (2,6,6-trimethylbicyclo[3.1.1]hept-2-ene), + beta-pinene (6,6-dimethyl-2-methylene bicyclo[3.1.1]heptane), + p-cymene (1-methyl-4-[1-methylethyl]benzene), + (S)-(-)-limonene [(-)-1-methyl-4-(l-methylethenyl)cyclohexene], + 1,8-cineole (1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane), and + linalool (3,7-dimethyl-1,6-octadien-3-ol) were determined at 298.15 K and at atmospheric pressure using a digital density meter, a Schott viscosity measuring system, and an Abbe refractometer, respectively. The excess molar volumes, V-m(E), deviations in viscosities, Deltaeta, and deviations in molar refractions, DeltaR, calculated from experimental measurements, are always negative, with the exception of the V-m(E) curve referring to the hexane + linalool mixture, which shows an inversion of sign. Results were fitted to the Redlich-Kister polynomial and qualitatively discussed in terms of molecular interactions. The McAllister multibody interaction model was used to correlate the kinematic viscosities of liquid mixtures with mole fractions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
