This work discusses high-pressure gas solubility. Reference state is the Henry's law and a two-parameter corresponding states model is used for the liquid phase. Pure gas is used as the vapor phase for the high-molecular paraffin's gas-liquid equilibrium. The systems under study are mixtures of carbon dioxide and normal paraffin up to a chain length of 44 carbon atoms. Correlated liquid compositions are in the 1 % to 3 % average absolute relative deviation range, with a maximum error of about 7 %. Using a known system as reference, the model could be used to predict solubility. In this case average absolute relative deviations are below 6 % in most cases.