Viscosity deviations of ternary mixtures di-n-butyl ether plus 1-propanol plus n-octane at several temperatures

Viscosities and densities of {x(1) di-n-butyl ether + x(2) 1-propanol + (1 - x(1) - x(2)) n-octane} and their corresponding binary mixtures were measured at the temperatures of 293.15, 298.15, 303.15 and 308.15 K under atmospheric pressure. Kinematic viscosities were determined using a capillary viscosimeter, and densities were measured by a vibrating tube densimeter. The viscosity deviations and Gibbs free energies of activation for flow were evaluated. All the experimental values were compared with the results obtained with different predictive methods. (C) 1998 Elsevier Science B.V. All rights reserved.