The densities, rho and refractive index, n(D) of binary mixtures consisting of bromobenzene, chlorobenzene, nitrobenzene have been measured for the whole range of composition at wide range of temperatures (T=293.15-333.15 K) in 10 K intervals and their ternary mixture with 1, 2-dichloroethane determined at T=293.15 K in ambient pressure (81.5 kPa), using Anton Paar DMA 4500 oscillating densimeter and Anton Paar Abbemat 500 automatic refractometer. From experimental data, excess molar volumes v(m)(E), for ternary and binary mixtures were derived. Partial molar volumes (V) over bar (i),apparent molar volumes V-phi i and refractive index deviations Delta n(D), of binary mixtures were calculated also and v(m)(E), and Delta n(D) for binary mixtures were correlated with the Redlich-Kister polynomial equation. A comparative study has been made of the refractive indices obtained experimentally and those calculated by means the theoretical relations. Excess molar volume of ternary mixtures were fitted with Cibulka, Singh, and Nagata equations and four geometrical solution models were used to predict excess molar volume of ternary mixtures. Excess molar volumes, v(m)(E), and refractive index deviations, Delta n(D) are positive for the bromobenzene + nitrobenzene mixtures, while v(m)(E) of chlorobenzene +bromobenzene and chlorobenzene + nitrobenzene mixtures are negative and the refractive index deviations Delta n(D) showed similar behavior. PC-SAFT equations of state were applied to predict density of binary and ternary mixtures and the experimental results of constitute binary mixtures have been used to test the applicability of the Prigogine-Flory-Patterson (PFP) theory. (C) 2016 Elsevier B.V. All rights reserved.