Densities of the ternary mixture consisting of {2-chlorobutane (1) + butylacetate (2) + isobutanol (3)} and related binary mixtures were measured over the whole range of composition at T = 298.15 K and ambient pressure. Excess molar volumes V(m)(epsilon), for the mixtures were derived and correlated as a function of mole fraction by using the Redlich-Kister and the Cibulka equations for binary and ternary mixtures, respectively. From the experimental data, partial molar volumes, (V) over bar (mj) excess partial molar volumes, (V) over bar (E)(i) partial molar volumes at infinite dilution (V) over bar (0)(mj) and apparent molar volumes V were also calculated. For all binary mixtures over the entire range of mole fractions V(m)(epsilon) data are positive. The experimental results of the constituted binary mixtures have been used to test the applicability of the extended real associated solution (ERAS-model) and Prigoginc-Flory-Paterson (PFP) theory. (C) 2011 Elsevier Ltd. All rights reserved.