Viscosity B-coefficients for sodium halides (NaX, X- = Cl-, Br, and I-) in aqueous monosaccharides (D-glucose, D-galactose, D-xylose, and D-arabinose) were determined from density and viscosity (eta) measurements at 298.15 K. The contributions of solvent property (B-1) and the electrolyte-solvent interaction (B-2) to the B-coefficient were also obtained together with molar activation energies (Delta mu(0 not equal)(E)) of the electrolytes for viscous flow of the aqueous saccharide-electrolyte solution. In addition, H-1 spin-lattice relaxation times (T-1) were measured for two glycosides in D2O with and without sodium halides. The results show the interactions between X-and the saccharides are in the following order: Cl- > Br- > I-. A linear relationship is observed between the relaxation rate (1/T-1) and electrolyte concentration.