Dynamic and isothermal TGA for ([emim][DCA] + [4empy][Tf2N]) mixtures were carried out.
MOTs for ([emim][DCA] + [4empy][Tf2N]) mixtures were properly predicted by pure IL dynamic data.
Specific heats for ([emim][DCA] + [4empy][Tf2N]) mixtures were measured from T = (296.2 to 372.2) K.
Surface tensions for ([emim][DCA] + [4empy][Tf2N]) mixtures were determined from T = (298.2 to 323.2) K.
Ideality of the ([emim][DCA] + [4empy][Tf2N]) mixtures was evaluated by calculating excess properties.