The activity coefficients at infinite dilution, gamma(infinity) and gas-liquid partition coefficients, K-L for 61 solutes: alkanes, alkenes, alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, esters, 1-nitropropane, butanal, acetonitrile, and water in the ionic liquid 1-(2-methoxyethyl)-1-methylpiperidinium bis(trifluoromethylsulfonyl)-amide were determined by inverse gas chromatography at the temperatures from (318.15 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) values obtained over the temperature range. The selectivities for selected compounds, which form azeotropic mixtures, were calculated from the gamma(infinity) and compared to the literature values for other ionic liquids based on bis(trifluoromethylsulfonyl)-amide anion. (C) 2012 Elsevier Ltd. All rights reserved.