Densities and Viscosities of Binary Mixtures of <i>n</i>-Butanol with 2-Butanol, Isobutanol, and <i>tert</i>-Butanol from (303.15 to 343.15) K

Abstract

This paper presents densities and viscosities for n-butanol, 2-butanol, isobutanol, tert-butanol, and for binary mixtures with n-butanol as a common component at temperatures between (303.15 and 343.15) K over the entire composition range. The experimental apparatuses are a vibrating-tube densimeter for the density measurements and two Cannon−Fenske viscosimeters for the viscosity measurements. We have calculated excess molar volumes, dynamic viscosities, and excess Gibbs energy of activation from the experimental measurements. A temperature-dependent Redlich−Kister equation represents the calculated excess molar volumes, viscosity deviations, and excess Gibbs energy of activation. The Grunberg−Nissan equation has been used to correlate the experimental kinematic viscosities of the binary liquid mixtures.