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

ABSTRACT

This paper presents densities and viscosities of binary mixtures of 1-pentanol + 2-pentanol, 1-pentanol + 2-methyl-1-butanol, and 2-pentanol + 2-methyl-1-butanol from (288.15 to 328.15) K over the entire concentration range at atmospheric pressure. Experimental densities and viscosities are measured using a vibrating tube densimeter and a glass capillary viscometer, respectively. The relative standard uncertainties estimated in the density and viscosity were 4.8 x 10- 4 and 0.01, respectively. Excess molar volume values suggest that these mixtures behave as ideal solutions. Viscosity deviations are negative for all of the mixtures investigated in this study. Redlich-Kister equation is used to represent the behavior of the excess molar volumes and viscosity deviations as a function of the composition. The Nava-Rios and McAllister equations correlate the kinematic viscosity values with an average absolute percentage deviation of 0.139% and 0.203%, respectively.