Viscosity B-coefficients of lithium, sodium. and potassium bromide in (30, 60, and 90) % aqueous 1,3-dioxolane solutions have been determined at (298 15 and 308.15) K from density and viscosity measurements employing the Jones-Dole, Breslau-Miller, and Vand equations B-coefficients thus obtained were compared Furthermore, the applicability of the Moulik equation was shown by linear plots of relative viscosity and concentration values in their square terms It has been found that the B-coefficients vary with the size of the cations, which suggests a structure-promoting tendency for all of the salts and for all of the concentrations