1,1,1,3,3-五氟丙烷

1,1,1,3,3-Pentafluoropropane (HFC-245fa) is a hydrofluorocarbon used primarily for closed-cell spray foam insulation produced by Honeywell and in Asia by Sinochem. Honeywell markets HFC-245fa under the Enovate and Genetron 245fa brand names. HFC-245fa is also known as pentafluoropropane and by its chemical name 1,1,1,3,3,-pentafluoropropane. Unlike CFC and HCFC blowing agents formerly used for this purpose, it has no ozone depletion potential and is nearly non-toxic. Although it is intended to remain trapped within the foam insulation, it is practically non biodegradable with a lifetime of 7.2 years when it eventually does escape into the atmosphere. It does have a high global warming potential of 950 (950 times the global warming effect of CO2). Honeywell refers to this as \"acceptable\" in their literature, but they don't include the actual number.