Measurement and correlation of density and viscosity of n-hexadecane with three fatty acid ethyl esters

Abstract

This work reports the density and viscosity of binary mixtures for n-hexadecane with three fatty acid ethyl esters (ethyl caprylate, ethyl caprate, and ethyl laurate) in the overall composition range at temperatures from 298.15 to 323.15K and at atmospheric pressure (0.1MPa). Excess molar volumes and viscosity deviations have been obtained. In addition, the viscosities of the binary mixtures were correlated using a rough hard-sphere model. The average absolute relative deviations between the experimental data and the calculated values were 0.26% for n-hexadecane/ethyl caprylate, 0.30% for n-hexadecane/ethyl caprate, and 0.24% for n-hexadecane/ethyl laurate with optimized adjustable parameters. It indicates that the rough hard-sphere model is able to reproduce the viscosity behavior of the studied binary mixtures very well.