Physical and chemical properties of binary mixtures of dibutylammonium-based ionic liquids and water

Ionic liquids are used in different processes owing to their low vapor pressure, large viscosity range, chemical and thermal stability, superior conductance even without water. These features make them flexible tunable, indicating possible use as substitutes for commonly compounds many processes. The objective of this study was evaluate the properties aqueous binary solutions three ionic (ILs): dibutylammonium acetate, propanoate, butanoate. measured were density, speed sound, conductivity, isentropic compressibility expansion coefficient calculated based on these properties. temperature range measurements 293.15–323.15 K. Mathematical models each liquid + water mixture fit density sound data. increase alkyl chain leads a tendency decrease values conductivity solutions. However, decreasing dilution water, initially then decrease, exhibiting maximum initial concentration which indicates formation aggregates. Critical micellar concentrations at 298 K determined through Enhancing velocity.