Question

What is supercritical CO₂? Why is it considered a green solvent.  

Answer 1

1. Supercritical fluids possesses properties of gases and liquids in an intriguing manner, which could after a range of applications in both synthetic and analytical chemistry.
2. The green solvents: A newer concept involves the technology which has been popularly preferred over conventional solvents extraction process because of environment concerns, such as the need to organic solvents and to find appropriate technologies for their disposal.
Eg. Ionic liquid CO2, propylene glycol, etc.