This critical review covers the existing literature on the solubility of CO2in water from 273 K to the critical temperature of the solvent (647 K). Results of the evaluation are expressed in the form of fitting equations for the infinite dilution Henry’s constant,k0, as a function of the density of the solvent, and also as an explicit function of the temperature. The pressure effect on the solubility is considered in the formulation. Different equations of state were used for the description of the CO2–H2O vapor phase and the effects on the calculated Henry’s constant values are analyzed. The ‘‘best’’ solubility estimates are presented in smoothed tabular form.