Densities (rho) and viscosities (eta) of aqueous xylitol solutions with glycine, L-alanine, L-valine, L-threonine, or L-arginine were measured at T = (293.15 to 323.15) K under atmospheric pressure. The density values were utilized to further calculate the apparent molar volume (V-phi), the limiting partial molar volumes of amino acids (V-phi(0)), the limiting partial molar volumes of transfer (Delta V-tr(phi)0)) and the interaction coefficients V-ab, V-abb, V-abbb. The viscosity data were used to obtain viscosity B-coefficient the free energies of activation per mole of solvent (Delta mu(0 not equal)(1)) and solute ( (Delta mu(0 not equal)(2)). The limiting partial molar volumes of transfer and the free energies of activation per mole of both solvent (Delta mu(0 not equal)(1)) and solute (Delta mu(0 not equal)(2)) were analyzed based on the cosphere overlap model and transition state theory, respectively. The hydration number of amino acid was determined using the obtained limiting partial molar volume and viscosity B-coefficient.