Densities of N,N'-1,2-ethyl-bis(salicyladimine) Schiff base (salen) in dimethylsulfoxide (DMSO), N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMA), dichloromethane (CH(2)Cl(2)), and chloroform (CHCl(3)) binary mixtures have been measured in dilute concentration regions of salen at T = (283.15 to 318.15) K under ambient pressure. Apparent molar volumes, V(phi), and standard partial molar volumes, V(phi)(0), have been calculated from the measured densities. The V(phi)(0), values in DMSO have larger values corresponding to the high polarity of this solvent. The results show that their values would be increased slightly with an increase in temperature. The partial molar expansivities, E(phi)(0), and the isobaric thermal expansion coefficients; alpha*, have been calculated from the temperature dependence of V(phi)(0) values. The Hepler's constant values, (partial derivative(2)V(phi)(0)/partial derivative T(2))(p), were found to be positive or very small and negative which indicate that salen Schiff base is predominately a structure maker in all organic solvents studied.