Since all residual thermodynamic properties can be calculated from an equation of state (EOS), an accurate EOS may also be used for the computation of excess properties and vapor-liquid equilibria (VLE) simultaneously. Cubic equations of state have been used with G(E)-mixing rules for associating mixtures. In the present study, the applicability of the hydrogen-bonding non-random lattice fluid model (NLF-HB) was investigated for the simultaneous correlation of VLE and excess properties of mixtures containing associating components. The optimized parameters for VLE and H-E at room temperature gave reliable results for fitted properties. V-E calculation showed large errors but the molar volume was accurate. The allowable range for the temperature extrapolation of the binary parameter was wider for VLE than for for H-E. (C) 2003 Elsevier B.V. All rights reserved.