Protection of Stratospheric Ozone: Listing of Substitutes for Ozone-Depleting Substances-Hydrocarbon Refrigerants

摘要

Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action proposes to list isobutane, propane, HCR-188C, and HCR-188C1 as "acceptable, subject to use conditions," as substitutes for chlorofluorocarbon (CFC)-12, also referred to as R-12, CCl 2 F 2 and dichlorodifluoromethane and hydrochlorofluorocarbon (HCFC)-22, also referred to as R-22, CHClF 2 , chlorodifluoromethane and difluorochloromethane, in household refrigerators, freezers, and combination refrigerator and freezers and commercial refrigeration (retail food refrigerators and freezers--stand-alone units only).