**6. Conclusions**

The phase behavior of selected hydrocarbons and functional groups substances (alcohols, ethers, esters) is investigated to assess their capability as solvents/ cosolvents for CO2 capture. Simple models as cubic equations of state have the capability to accurately predict the phase behavior of carbon dioxide + different organic substances binary systems. Phase diagrams are important tools in assessing the global behavior. The type of phase behavior is providing essential information for the operating domain of binary system.
