Densities and viscosities of ternary liquid mixtures of bromobenzene + 1,4-dioxane + ( benzene or + toluene or + carbontetrachloride) and binary mixtures of bromobenzene + 1,4-dioxane + benzene, bromobenzene + benzene, 1,4-dioxane + toluene, bromobenzene + toluene, 1,4-dioxane + carbon tetrachloride, and bromobenzene + carbon tetrachloride have been measured at 303.15 K. From density and viscosity data, the values of viscosity deviations (Delta eta) and the excess molar volume (V-E) for the ternary systems have been determined and fitted to Cibulka's equation.