Densities, Viscosities, Refractive Indices, and Surface Tensions of Dimethyl Sulfoxide + Butyl Acetate Mixtures at (293.15, 303.15, and 313.15) K

Densities ( ρ ), viscosities ( η ), refractive indices ( n D ), and surface tensions ( σ ) have been measured for dimethyl sulfoxide + butyl acetate mixtures, over the entire composition range at (293.15, 303.15, and 313.15) K. The excess volumes ( V E ), the viscosity deviations ( Δ η), and the deviations in refraction ( Δ R ) were calculated from these experimental data. All the properties have negative values. The results have been fitted to the Redlich−Kister type polynomial relation, and the corresponding parameters have been derived. The results are discussed in terms of molecular interactions.