The carbon dioxide phase diagram illustrates the various states (solid, liquid, and gas) of CO2 under different temperature and pressure conditions. It features regions where CO2 exists as a single phase (e.g., liquid or gas) and regions where two phases (e.g., liquid and gas) coexist. The critical point represents the temperature and pressure at which the liquid and gas phases become indistinguishable. The triple point indicates the temperature and pressure at which the solid, liquid, and gas phases all coexist in equilibrium.
