Physicochemical characterization of the binary systems of water and superbase ionic liquid: experimental measurements and COSMO-RS predictions, XII Iberoamerican Conference on Phase Equilibria and Fluid Properties for Process Design / XI Brazilian Conference on Applied Thermodynamics, Filipe H. B. Sosa, Mónia A. R. Martins, and João A. P. Coutinho, 24-27th October 2022, Campinas, Brazil.