Properties for binary mixtures of (acetamide + KSCN) eutectic ionic liquid with ethanol at several temperatures

• Density, viscosity and conductivity of (acetamide + KSCN) ethanol solution were measured.
• VE and Δη were calculated from the measured density and viscosity respectively.
• VE and Δη were both well fitted by a third order Redlich–Kister equation.
• The conductivity was described by a Castell–Amis equation.

Density, viscosity and conductivity were determined for the binary mixture of (acetamide + KSCN) eutectic ionic liquid with ethanol at T = (298.15, 303.15, 308.15, 313.15, 318.15) K and atmospheric pressure. The density, viscosity values decrease with the increase of temperature while the conductivity values increase over the whole concentration range. The density and viscosity values decrease monotonically with the increase of the mole content of ethanol. From the experimental values, excess molar volumes VE and viscosity deviations Δη for the binary mixture were calculated and VE and Δη were both well fitted by a third order Redlich–Kister equation. With the increase mole fraction of ethanol, the conductivity values of the mixture increase gradually first and then decrease dramatically, and the highest conductivity values appear at 0.8562 mol fraction of ethanol. The relationship between the conductivity and the mole fraction of ethanol can be well described by a Castell–Amis equation. The interactions with ethanol molecular and ions of (acetamide + KSCN) ionic liquid were discussed by FTIR spectra.

Viscosity deviation (Δη) against mole fraction of ethanol for [ethanol(1) + [(acetamide + KSCN)](2)] mixtures at several temperatures. The solid lines represent the corresponding correlation by the Redlich–Kister equation.Figure optionsDownload as PowerPoint slide