Viscosities of the ternary mixture (2-butanol plus n-hexane plus 1-butylamine) at 298.15 and 313.15 K

Viscosities of the ternary mixture (2-butanol + n-hexane + 1-butylamine) an d of the binary mixtures (2-butanol + n-hexane) at 298.15 and 313.15 K, and (2-butanol + 1-butylamine) at 313.15 K have been measured at atmospheric p ressure. Viscosity deviations and excess Gibbs energy of activation of visc ous flow for the binary and ternary systems were fitted to Redlich-Kister's and Cibulka's equations, respectively. To correlate experimental data of t ernary system from binary ones, different empirical and semiempirical equat ions have been used (Nissan and Grunberg, Hind, Frenkel, McAllister, Katti and Chaudhri, Heric and Iulan) and their parameters have been calculated. T he "viscosity-thermodynamic'' model (UNIMOD) has been applied to correlate experimental data for the binary mixtures and to predict the viscosity for the ternary system. The Group Contribution-Thermodynamic Viscosity model (G C-UNIMOD), and the group contribution method proposed by Wu have been emplo yed to predict the viscosity for the binary and ternary systems. (C) 2000 E lsevier Science B.V. All rights reserved.