Density and speed of sound of binary mixtures of ionic liquid with DMF andNMF at different temperature: measurements and PC-SAFT modeling

An ionic liquid is a salt in the liquid state. The little data available on the physicochemicalproperties of ILs and their fundamental understanding has prevented their further applicationsin the industry [1]. Thus data of physicochemical properties of ILs is essential in both thetheoretical research and industrial applications. In this work, the values of density and speedof sound were measured for the binary mixtures of 1-ethyl-3-methylimidazoliumtetrafluoroborate ([EMIM][BF4]) and organic solvents DMF and NMF. Then PC-SAFTmodel was used to correlate the densities of the binary mixtures at the temperature range of293.15-343.15 K.