The activity coefficients at infinite dilution, gamma(infinity)(13) and (gas + liquid) partition coefficients, K-L for 61 solutes: alkanes, alkenes, alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, esters, butanal, nitrogen compounds and water in the ionic liquid 4-(3-hydroxy)-4-methylmorpholinium bis(trifluoromethylsulfonyl)-amide were determined by (gas + liquid) chromatography at the temperatures from (298.15 to 368.15) K. The partial molar excess Gibbs free energies Delta G(1)(E,infinity), enthalpies Delta H-1(E,infinity) and entropies Delta S-1(E,infinity) at infinite dilution were calculated from the experimental gamma(infinity)(13) values obtained over the temperature range. The selectivities and capacities at infinite dilution for selected extraction problems (water/butanol, hexane/benzene, heptane/thiophene) were calculated from the gamma(infinity)(13) and compared to the literature values for other ionic liquids based on bis(trifluoromethylsulfonyl)-amide anion. The values of K-L were used to determine the linear free energy relationship (LFER) system constants as a function of temperature. The density and viscosity of the investigated ionic liquid at temperatures from (298.15 to 368.15) K as well as other physicochemical properties: temperature of fusion and glass transition temperature were also measured. (C) 2015 Elsevier Ltd. All rights reserved.