Densities of the monoethanolamine-methanol binary mixture system were measured over the whole range of compositions at temperatures from 283.15 to 353.15 K using an Anton Paar digital vibrating glass tube densimeter. The density of this system has been found an increasing function of the monoethanolamine composition. The measured experimental excess volume data have been correlated using the Redlich-Kister equation. A set of parameters for the Redlich-Kister equation has been determined. Moreover, infinite dilution partial volumes were also calculated for each component. (c) 2004 Elsevier B.V. All rights reserved.