Application of some geometrical and empirical models to excess molar volume for the multi-component mixtures at TÂ =Â 298.15Â K

► Excess molar volume of quartenary mixtures of 1-chlorobutane, 2-chlorobutane, butylamine, and butylacetate was determined. ► The experimental data were correlated by some empirical and semi empirical models. ► A comparison with PFP theory has been successfully applied from binary data.