In this work, isothermal vapor–liquid equilibria for two ternary
systems methyl acetate(1) + methanol(2) + IL(3) (IL = [BMPYR][DCA]
or [EMIM][SCN]) and the five constituting binary subsystems
are measured and the effects of ILs on the methyl acetate/methanol
separation factor determined. For the VLE measurements we
implemented two new static headspace gas chromatography
(HSGC) techniques avoiding the need of explicit GC calibration
and offering further advantages compared to the dynamic boiling
technique using conventional recirculation stills employed by previous
authors.