Thermodynamic behaviour of the eight systems containing 1,1,2,2-tetrachloroethane and ethyl or propyl C-1-C-4 alkanoates was interpreted in terms of the DISQUAC group contribution model. The DISQUAC dispersive interaction parameters for COO/Cl contact were evaluated considering the quasichemical parameters are equal to zero. The molar excess Gibbs energies and the excess enthalpies were calculated using this model and compared with experimental data. The relation between the DISQUAC interaction parameters for COO/Cl contact and the chain length of the alkanoate was established.