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What, do they use supercritical CO2? If so, I expect it would be very thorough on any polar or low-molecular weight contaminates due to a combination of high density, high diffusion coefficient, and low viscosity, on par with a gas. I would wonder about its ability to deal with high molecular weight non polar substances, such as certain fats and oils.Originally Posted by Huntsman
I would wonder about its ability to deal with high molecular weight non polar substances, such as certain fats and oils.Originally Posted by Huntsman
They actually use liquid CO2. And it's the other way around, CO2 works very well for nonpolar substances and is similar in effectiveness to hexane. Remember, it's nonpolar despite the two oxygens.Originally Posted by GQgeek
You are correct that liquid CO2 is "used", but only in the sense that it is pressurized into the supercritical region. In other words the cleaning uses supercritical CO2 as a solvent.Originally Posted by Aus_MD
They actually use liquid CO2. And it's the other way around, CO2 works very well for nonpolar substances and is similar in effectiveness to hexane. Remember, it's nonpolar despite the two oxygens.Originally Posted by GQgeek