The density and viscosity values of binary mixtures of ethanolamine with water were measured at 303.15, 308.15, 313.15 and 318.15 K, using this data excess molar volume V-E, viscosity deviation Deltaeta and excess Gibbs free energy of activation DeltaG(E)* of viscous flow have been calculated. The results were fitted by Redlich-Kister equation. All mixtures show negative values of V-E due to increased interactions between unlike molecules or very large differences in the molar volumes of pure components at relatively low temperature.