Thermodynamic properties of N,N'-salicylidenephenylediamine Schiff base (Salophen) in the solutions of ionic liquid, 1-butyl-3-methylimidazolium bromide ([BMIm]Br) + organic solvents (N, N-dimethylacetamide DMA, and dimethylsulfoxide DMSO) have been measured at 298.15 K. The measured density and viscosity values have been used to calculate apparent molar volumes, V-phi, standard partial molar volumes, V-phi(0), standard partial molar volumes of transfer, Delta V-D(phi), viscosity B-coefficients, and solvation numbers, B/V-phi, for the solutions being studied. All of these parameters were used to interpret the solute- solvent interactions and solvation process occurring between ionic liquid and Salophen. (C) 2013 Elsevier Ltd. All rights reserved.