Densities and viscosities of binary mixtures of {dimethylsulfoxide + aliphatic lower alkanols (C1–C3)} at temperatures from T = 303.15 K to T = 323.15 K

Densities and viscosities for dimethylsulfoxide (DMSO) with methanol, ethanol, 1-propanol, and 2-propanol have been measured as a function of mole fraction at T = (303.15, 308.15, 313.15, 318.15, and 323.15) K and atmospheric pressure. From the measurements, excess molar volumes (VmE), excess viscosities (ηE), and Grunberg and Nissan interaction parameters (ε  ) have been calculated. The excess parameters are fitted to a Redlich–Kister equation. Excess molar volumes (VmE) are negative for (DMSO + methanol, + ethanol) systems throughout the whole range of composition. The (DMSO + 1-propanol) system shows both positive and negative excess molar volumes and (DMSO + 2-propanol) shows positive excess molar volume, hardly any negative value is observed in alcohol rich-region. The excess viscosities and interaction parameters of all the mixtures are negative except for the (DMSO + methanol) system which is positive.