Densities, viscosities and excess parameters of octanol with alkyl(C1 – C4) acetates at varying temperatures

Abstract

The density and viscosity of binary mixtures of octanol with methyl, ethyl, propyl and butyl acetates were experimentally measured (T = 298.15, 303.15, 308.15and 313.15 K) at 1 atm over the complete range of mixture composition. Based on the measurements, excess molar volume, viscosity deviation, and excess Gibbs free energy were evaluated. The calculated excess properties were then fitted to the Redlich-Kister polynomial to obtain the coefficients. All the experimental values for the pure components were comparable with the existing research values. The consequences were discussed in terms of molecular interactions prevailing in the mixtures. 15 different approaches especially some recently developed ones have been employed, both predictive and correlative, for predicting viscosity values and a comparative study carried out thereof.