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 u sing a capillary viscosimeter, and densities were measured by a vibrat ing tube densimeter. The viscosity deviations and Gibbs free energies of activation for flow were evaluated. All the experimental values wer e compared with the results obtained with different predictive methods . (C) 1998 Elsevier Science B.V. All rights reserved.