Solubility of Cs2CO3-C2H5OH-H2O ternary system at 30 degreesC has been stud
ied by using micro-equipment for solubility determination. There appear two
phases, alcoholic phase and water phase, in the liquid phase. The solubili
ty of Cs2CO3 in water, C2H5OH and mixed solvent has been determined. The ph
ase diagram indicated that C2H5OH might be strongly salted out by Cs2CO3 fr
om this system and the equilibrium solid phase is Cs2CO3.3.5H(2)O.