Vapour-liquid equilibrium of acetone-CO 2 mixtures of different compositions at the vicinity of the critical point Balázs Fábián, 1,2,‡ George Horvai, 1 Abdenacer Idrissi 3 and Pál Jedlovszky 4* 1 Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, H-1111 Budapest, Hungary 2 Institut UTINAM (CNRS UMR 6213), Université Bourgogne Franche-Comté, 16 route de Gray, F-25030 Besançon, France 3 Laboratoire de Spectrochimie Infrarouge et Raman (UMR CNRS 8516), University of Lille Nord de France, 59655 Villeneuve d’Ascq Cedex, France 4 Department of Chemistry, Eszterházy Károly University, Leányka utca 6, H- 3300 Eger, Hungary Running title: Vapour-liquid equilibrium of acetone-CO2 mixtures ‡ Present address: Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, CZ-16610 Prague 6, Czech Republic * Electronic mail: jedlovszky.pal@uni-eszterhazy.hu (PJ)