| 摘要 |
Compositions of perfluoroethane and trifluoromethane are disclosed as acceptable drop in replacements for R-503. Also disclosed are azeotropic or azeotrope-like compositions of admixtures of effective amounts of perfluoroethane and trifluoromethane, nitrous oxide, carbon dioxide, or fluoromethane to form an azeotropic or azeotrope-like composition. Such compositions are useful as cleaning agents, expansion agents for polyolefins and polyurethanes, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
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