Volumetric properties of n-hexadecane/ethyl octanoate mixtures from 293.15 K to 363.15 K and pressures up to 60 MPa

Abstract

The densities of pure ethyl octanoate and n-hexadecane/ethyl octanoate mixtures were measured from 293.15 K to 363.15 K and up to 60 MPa using U-shape vibrating-tube densimeter. The results were correlated as Tait equation, the excess molar volumes, isothermal compressibilities, and isobaric thermal expansivities of the mixtures were calculated and analyzed. In addition, the parameters in the PC-SAFT equation for ethyl octanoate were obtained based on the high-pressure densities obtained in this work and the vapour pressure in the literatures. The densities of the mixtures were predicted by PC-SAFT equation, the absolute average deviations between the experimental results and those calculated were less than 0.52%.