Physicochemical properties and internal structures of dimethyl sulfoxide-1-propanol liquid mixtures

The 1H-NMR spectra of liquid binary mixtures of dimethyl sulfoxide (DMSO) and 1-propanol (PrOH), were recorded at 298 K over almost the whole range of the mixed solvent compositions. From these data were found the values of the spectral parameter, Δδ(DMSO-PrOH). The densities (d12) and viscosities (η12) of the mixed solvent were measured at 298.15 K, as well as the relative permittivities (Ε12) at 293.15 K, 298.15 K and 303.15 K. From all these data, the molar volumes (V12) and their deviations from ideality were calculated. Additionally, the temperature coefficients of relative permittivity, α12, were found. These structural parameters of functions of concentration suggest the formation of stable DMSO-PrOH, DMSO-2PrOH and DMSO-3PrOH type complexes.