Experimental densities for the ternary mixtures x(1) 1-chlorobutane + x(2) n-heptane + (1 - x(1) - x(2))2-butanone or 2-pentanone and five corresponding binary systems have been measured at T=(288.15, 303.15 and 313.15) K and atmospheric pressure, using a DMA 5000 Anton Paar densimeter. Excess molar volumes have been calculated using the measured experimental densities of the pure liquids and mixtures. The V-E results were correlated and fitted by the Redlich-Kister equation for binary mixtures and by the Nagata and Tamura equation for ternary mixtures, as a function of mole fraction. Several predictive empirical relations were applied to predict the excess molar volumes of ternary mixtures from the binary mixing data. The excess molar volumes for the two ternaries are positive over the entire range of composition and at temperature between 288.15 K and 313.15 K. (C) 2012 Elsevier B.V. All rights reserved.