In this work, the densities and viscosities of 1-ethyl-3-methyl­imida­zolium di­ethyl­phosphate ([EtMeIm]+ [Et2PO4]−) in binary mixtures with water and dimethyl sulfoxide (DMSO) at atmospheric pressure and temperatures between 293.15 and 373.15 K were determined. The properties were measured in a Stabinger densimeter–viscosimeter SVM 3000 model. In addition, a correlation of the viscosity data was made with a modification of the Grunberg and Nissan correlation, in which corrections for the interaction between the ionic liquid and the water, DMSO, or both were introduced. For the mixture H2O + ([EtMeIm]+ [Et2PO4]−), the %AARD is 13% with a maximum deviation (%max) of 49%; for the mixture DMSO + ([EtMeIm]+ [Et2PO4]−), the %AARD is 9.5% and the %max is 49%.

In this work, densities, viscosities and vapor pressures of dimethyl sulfoxide (DMSO) + 1-allyl-3-methylimidazolium chloride (AmimCl) mixtures have been experimentally determined. Densities and viscosities were measured at temperatures T = [293.15, 373.15] K and molar fractions of dimethyl sulfoxide xDMSO = 0, 0.05, 0.1, 0.15, 0.25, 0.5, 0.75, 0.9 and 1 at atmospheric pressure with a Stabinger densimeter-viscosimeter. Viscosities and densities were found to decrease with increasing temperature and DMSO concentrations. Correlation of viscosity was made as a function of temperature and concentration with two modifications of the Seddon and Grunberg-Nissan equation, one with an average relative deviation of 6.8% and the second one of 16.3%. Vapor pressures of the mixtures were measured at T = [353.1, 433.1] K. and were correlated with Non-Random-Two-Liquid (NRTL) model, obtaining ARD% between 5 and 12%.

The solubility of solid bisphenol A (4,4 0 -(propane-2,2-diyl)diphenol) in supercritical carbon dioxide (SC-CO 2 ) has been measured at temperatures of T = 313 K, T = 333 K, and T = 353 K and in the pressure range 12 MPa < P < 20 MPa, using a variable-volume view cell according to the synthetic method. The solubility increases with increasing pressure and temperature, ranging from 1.8 3 10 À5 (mole fraction) at T = 313 K and P = 16.4 MPa to 7.7 3 10 À5 (mole fraction) at T = 353 K and P = 14.6 MPa. The solubility data obtained have been correlated using the PengÀRobinson equation of state with quadratic mixing rules. The results obtained are useful for the design of processes for the synthesis or recycling of polycarbonate in supercritical CO 2 .

The solubility of CO2 in three cellulose‐dissolving ionic liquids (1‐ethyl‐3‐methylimidazolium diethylphosphate, [Emim][DEP], 1‐allyl‐3‐methylimidazolium chloride, [Amim][Cl], and 1‐butyl‐3‐methylimidazolium chloride, [Bmim][Cl]) at temperatures within 298 and 356 K and pressures up to 6.5 MPa was determined using a Van Ness‐type apparatus (static isochoric). It was demonstrated that this device can work in isothermal and isoplethal modes, being the latter faster and more precise. Moreover, it was possible to determine CO2 solubilities in metastable liquid [Bmim][Cl]. Experimental data were modeled using the Extended Henry's law correlation and the group contribution equation of state. New parameters for the binary interaction of CO2 with ionic liquid groups were calculated.