CO2 Technology Platform: An Important Tool for Environmental Problem Solving.

CO2 is a good solvent for many substances when compressed into its liquid or supercritical fluid state. Above the critical temperature and critical pressure (Tc =31 °C, Pc =73.8 bar, see Figure 1 for the phase diagram for CO2 ), CO2 has both gaslike viscosities and liquidlike densities. These moderate critical conditions allow CO2 to be used within safe commercial and laboratory operating conditions. Small changes in temperature and pressure cause dramatic changes in the density, viscosity, and dielectric properties of CO2 , making it a tunable solvent that can be tailored for various applications. Combined, these unique properties make CO2 a "solvent of choice" for the new millennium.

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