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NEW CHEMICAL ALTERNATIVE FOR OZONE-DEPLETING SUBSTANCES: HFC-245CA
Citation:
Smith*, N D., C L. Gage*, E. Baskin*, AND R. Hendriks*. NEW CHEMICAL ALTERNATIVE FOR OZONE-DEPLETING SUBSTANCES: HFC-245CA. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-96/132 (NTIS PB97-125413), 1996.
Impact/Purpose:
information
Description:
The report gives results of a preliminary evaluation of a new hydrofluorocarbon (HFC) -- HFC-245ca or 1,1,2,2,3-pentafluoropropane -- as a possible alternative for chlorofluorocarbon (CFC)-11 (trichlorofluoromethane) and hydrochlorofluorocarbon (HCFC)-123 (1,1,1-trifluoro-2,2-dichloroethane) refrigerant for low pressure chillers and as a possible alternative for CFC-11 and HCFC-141b (1-fluoro-1,1-dichloroethane) blowing agents for polyisocyanurate/polyurethane insulation foams. (NOTE: HFCs form a class of chemicals having the potential to replace stratospheric ozone depleting substances such as CFCs and HCFCs.) Evaluation tests included an examination of its flammability, stability, thermophysical properties, lubricant miscibility and lubricity, materials compatibility, acute inhalation toxicity, and refrigeration performance. An azeotrope composed of HFC-245ca and HFC-338mccq (1,1,1,2,3,4,4,4-octafluorobutane) was also examined from the standpoint of reducing the flammability of HFC-245ca.