The phase equilibrium, at T = 298.15 and 313.15K and several thermophysical properties (density, sound velocity, refractive index) at T = 283.15, 298.15 and 313.5 K of mixtures formed by a cyclic ether (tetrahydropyran, tetrahydrofuran) and 1-chloropropane has been studied. Excess Gibbs functions, excess volumes, excess isentropic compressibilities and refractive index deviations have been obtained from the experimental data. Both the molecular characteristics of the pure compounds and the molecular interactions in the mixing process have been used to analyse the results. The SAFT-VR approach has been applied without adjustable parameter to predict the phase behaviour at isothermal conditions of the mixtures. Results have been analysed and compared to those obtained in previous studies. (C) 2010 Elsevier B.V. All rights reserved.