Thermodynamic properties of (an ethyl ester plus an n-alkane). XI. H-M(E) and V-M(E) values for {xCH3(CH2)(u)COOCH2CH3+(1-x)CH3(CH2)(2 nu+1)CH3} withu = 6, 7, 8, 10, 12, and 14, and nu = (1 to 7)

Excess molar enthalpies and excess molar volumes at the temperature 298.15K were determined for a set of 42 binary mixtures of six ethyl alkanoates (f rom octanoate to hexadecanoate) and seven odd n-alkanes (from pentane to he ptadecane). Both properties were represented by a suitable equation. All mi xtures presented positive excess enthalpy values, mainly due to the energet ic effects of the van der Waals forces and dipole-dipole attractions, with low, or even negative excess volume values, except for the case of the mixt ures that contained high molar mass hydrocarbons. Calculated curves obtaine d from group-contribution models did not represent well the experimental da ta. (C) 1999 Academic Press.