Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Physico-chemical effects present in five binary liquid mixtures containing n-Butyl acetate + a homolog series of 1-alkanols have been studied over the full range of concentrations by measuring the density and viscosity at temperatures 293.15 to 323.15 K. The alcohols considered are those from 1-hexanol up to 1-decanol. Excess molar volumes are positive for all binary mixtures over the whole concentration range, while viscosity deviations are negative for all binary systems. Influences of temperature and addition of -CH2 group of alcohols on excess properties have been discussed. Systems involving n-Butyl acetate + 1-alkanol are mainly characterized by the selfassociation of the alcohol and the mentioned effect decreases when the size of the 1-alkanol increases the mixtures. As a result, molecular interactions are weaker in longer 1-alkanols. Moreover, the applicability of PC-SAFT theory has been examined and discussed for these systems. Although the PC-SAFT model provides consistent results on the thermal expansion coefficients, in the studied mixtures but for better prediction of the excess molar volumes of mentioned solutions, more complex mixing rules or more adjustable parameters should be used.