Volumetric and Viscometric behavior studies for ternary system of cycloheptane with three isomeric dimethyl benzene at different temperatures.

Abstract

This study concerned with measurement the densities ρ and viscosities η. Over the range of temperatures (293.15, 303.15, 313.15, and 323.15 k) for ternary mixtures cycloheptane + mxylene + o-xylene and cycloheptane + m-xylene + p-xylene. From experimental data of densities and viscosities, the excess molar volumes, V E , and excess viscosities, η E , were calculated for ternary mixtures. The Flory theory has been extended for the theoretical prediction of excess molar volume of ternary mixtures studied here depending on the pure component liquid parameters. In this study Heric-Coursey equation was used to calculate the excess viscosities for ternary mixtures studied here.