STUDIES ON INTERMOLECULAR INTERACTIONS IN LIQUID BUTANE-1,2-DIOL WATER MIXTURES

The H-1-NMR spectra of butane-1,2-diol (BD-1,2) - water mixtures as fu nction of concentration were recorded at 298 K and the spectral parame ters, Delta delta(BD-1,2-H2O) were evaluated. The surface tensions (si gma(12)) were measured at 298.15 K. From literature values of density (d(12)), viscosity ((eta(12)) dielectric permittivity epsilon(12)) and the measured surface tensions the molar volumes (V-12) and their devi ations from ''ideality'', at 298.15 K, were calculated. Further on the temperature coefficients of dielectric permittivity, alpha(12), were evaluated. These structural parameters as Functions of concentration s uggest the formation of the ''complexes'' (sub-units) of the BD-1,2 . 2H(2)O, BD-1,2 . 4H(2)O and 2BD-1,2 . H2O types.