Excess molar enthalpies, H-m(E), and volumes, V-m(E), were reported for binary mixtures of {nonafluorobutylmethylether, (FBME, C4F9OCH3) + 2-propanone, or + 2-butanone, or + 3-pentanone} at 298.15 K. Results of H-m(E) and V-m(E) were positive over a whole range of concentrations for all the mixtures. The magnitude was in order: 2-propanone > 3-pentanone > 2-butanone for H-m(E) and 3-pentanone > 2-butanone = 2-propanone for V-m(E) at the maximum point. However, the difference in the maximum values of H-m(E) and V-m(E) by the increase in the number of carbon atoms in the ketones, n(C) is not so large. From these results, partial molar quantities (H-m,i(E,infinity), V-m,i(E,infinity), and V-m,i(infinity)) of the i component at infinite dilution, and apparent molar enthalpies of solvation, Delta H-solv(i) of the i component were evaluated. The dependence of these thermodynamic quantities on the n(C) were discussed in consideration of various kinds of intermolecular interactions in pure component liquids and solutions. (c) 2006 Elsevier Ltd. All rights reserved.