An accurate model for calculating C2H6 solubility in pure water and aqueous NaCl solutions

An accurate model is presented to calculate the solubilities of C2H6 in pure water (273–444 K and 0–1000 bar) and in aqueous NaCl solutions (273–348 K, 0–16 bar and 0–6.3 mol kg−1). This model is based on a specific particle interaction theory for liquid phase and a new accurate equation of state developed in this study for vapor phase. Precision of the model is within or close to the uncertainty of experimental solubilities (about 7%). A FORTRAN code is developed for this model and can be downloaded from the website: www.geochem-model.org/programs.htm.