Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Densities, viscosities, refractive indexes, and surface tensions of a ternary system (tetrahydofuran + 2-propanol + 2,2,4-trimethylpentane) at T ) 298.15 K and three constituent binary systems at T ) (288.15, 298.15, and 308.15) K were measured at atmospheric pressure. Densities were determined using a vibrating-tube densimeter. Viscosities were measured with an automatic microviscometer based on the rolling ball principle. Refractive indexes were measured using a digital Abbe-type refractometer. Surface tensions were determined by the Wilhelmy-plate method. These results were used to calculate excess molar volumes VE, deviations in the viscosity Ac, deviations in the refractive index AnD, and deviations in the surface tension Ao. The calculated quantities of VE, Ac, AnD, and Ao were fitted to variable-degree polynomials. The ternary results were compared with the values estimated by different empirical equations of prediction.