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- noun organic chemistry The
halogenated hydrocarbon(a CFC) CHClF2 once used as a refrigerantand aerosol propellant
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The substance HFC-23, or trifluoromethane, is a byproduct of chlorodifluoromethane, or HCFC-22, a refrigerant in air conditioners and refrigerators and a starting material for producing heat and chemical-resistant products, cables and coatings.