Ionic liquid “Aliquat 336”, a promising electrolyte for electrochemical devices, was investigated. The transport physicochemical properties of binary mixture ionic liquid (Aliquat 336)/organic solvent (DMC) were studied. Systematical measurements of viscosities (η), conductivities (Λ) and densities (ρ) for the binary mixture, over the whole composition range and at temperature ranging from 298.15K to 318.15K, were performed. The variation tendency of viscosities/conductivities with composition of the mixtures was explained through the disruption of molecular solutes to ionic association or aggregation. Correlation between these two parameters was carried out by means of Walden product (W). A semi-empirical equation proposed by Jones and Dole was used to describe the variation of viscosity with salt concentration (C). At low concentration of Aliquat 336, molar conductivity follows the cube root law which was predicted by the quasilattice model. The two transport processes were well described by Arrhenius law. From this later, the activation energies for the viscosity (Ea,η) and conductivity (Ea,Λ) are deduced. Molecular interactions and structures of binary mixtures have been discussed from the excess molar volumes VE.