The apparent molar volumes and viscosities of N,N -bis(salicylaldehyde)-1,3-diaminopropane Schiff base (Salpr) have been determined in ionic liquid {1-pentyl-3-methylimidazolium bromide ([PnMIm]Br)} + N,N-dimethylformamide (DMF) solutions at 298.15 K from density and viscosity measurements using a vibrating tube densimeter and Übbelohde type viscometer, respectively. These data have been used to calculate standard partial molar volumes, V 0 φ , transfer partial molar volumes, tr V 0 , and viscosity B-coefficients of the solutions. The transfer partial molar volumes are negative, and decrease with increasing the concentration of ionic liquid for all of the investigated solutions. It found that this ionic liquid interacts strongly with the Schiff base (Salpr) and has desolvation effect on the Schiff base molecules.