Densities and Apparent Molar Volumes in the Binary System Dimethyl Sulfoxide-Water at 25, 40, 60, and 65 °C

The densities of binary mixtures of dimethyl sulfoxide and water have been determined at 25, 40, and 60 °C. These data are presented, along with literature values at 45 and 65 °C, and used to calculate the apparent molar volume of each component at all five temperatures at compositions of 0–100 wt % water. The densities show a strong, positive deviation from Ideality. Correlations are presented that allow the calculation of densities and apparent molar volumes at each temperature and all compositions.