Vapor–LiquidEquilibrium of Three Hydrofluorocarbonswith [HMIM][Tf2N].

Newexperimental data for the vapor–liquid equilibrium of1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf2N]) with difluoromethane (R-32), 1,1-difluoroethane (R-152a),and pentafluoroethane (R-125) were presented. Measurements were performedusing an isochoric saturation method at temperatures from (302.3 to344.1) K and at pressures between (0.03 to 1.22) MPa. The relativeexpanded uncertainty in solubility measurement is less than 4 %. Withinthe investigated temperature and pressure range, the order of thesolubilities for R-32, R-152a, and R-125 in [HMIM][Tf2N]is R-152a > R-32 > R-125. The experimental results were successfullycorrelated with the Krichevsky–Kasarnovsky equation. The AADbetween the experimental data and calculated values for the solubilitiesof R-152a, R-32, and R-125 in [HMIM][Tf2N] are 1.4 %, 1.5%, and 0.8 %, respectively. [ABSTRACT FROM AUTHOR]