A supercritical fluid (SCF) is any substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist, but below the pressure required to compress it into a solid. ... SCF are much superior to gases in their ability to dissolve materials like liquids or solids.

Is co2 a supercritical fluid?

Carbon dioxide usually behaves as a gas in air or as a solid called dry ice when frozen. Above its critical temperature and pressure, it behaves like a supercritical fluid and can adopt properties midway between a gas and a liquid.

Is CNG a supercritical fluid?

In their respective storage conditions, LNG is a liquid and CNG is a supercritical fluid.