1,1,1,3,3-Pentafluoropropane (HFC-245fa) is a hydrofluorocarbon is a colorless gas used primarily for closed-cell spray foam insulation. HFC-245fa is also known as pentafluoropropane and by its chemical name 1,1,1,3,3-pentafluoropropane.
Unlike CFC and HCFCblowing 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.[5] It does have a high global warming potential of 950 (950 times the global warming effect of CO2).[6][7] Honeywell refers to this as "acceptable" in their literature, but they don't include the actual number.
Economics
One of the disadvantages of R-245fa is its cost. In 2000, R-141b cost one US dollar per pound, whereas R-245fa cost $2.50 to $4.00 per pound.[8] As of 2007, and prior to Sinochem's production it was already a high volume production chemical, with over 1 million pounds produced annually.[5]
Manufacturing History
Pentafluoropropane is produced by Honeywell and in Asia by Sinochem.[9] Honeywell markets HFC-245fa under the Enovate and Genetron 245fa brand names. AlliedSignal, who adopted the Honeywell name after acquiring it, decided in 1999 to provide a non ozone depleting blowing agent as an alternative for dichlorofluoroethane (HCFC-141b) and trichlorofluoromethane (CFC-11). Competitors Atofina and General Electric pursued strategies using other agents.
^JACC 044 : 1,1,1,3,3-pentafluoropropane (HFC-245fa) (CAS No. 460-73-1), European Centre for Ecotoxicology, June 2004, retrieved 13 May 2012
^McCoy, Michael (October 30, 2000), , Chemical and Engineering News Online, 78 (44): 22–23, doi:10.1021/cen-v078n044.p022, ISSN 0009-2347, archived from the original on August 23, 2011, retrieved May 3, 2020
^Sinochem and Honeywell Announce Formation of Joint Venture in China, Sinochem Group, October 10, 2011
External links
Honeywell's Enovate Homepage
January 07, 2023
pentafluoropropane, 245fa, hydrofluorocarbon, colorless, used, primarily, closed, cell, spray, foam, insulation, 245fa, also, known, pentafluoropropane, chemical, name, pentafluoropropane, namespreferred, iupac, name, other, names, 245fa, 245fa, enovate, 3000,. 1 1 1 3 3 Pentafluoropropane HFC 245fa is a hydrofluorocarbon is a colorless gas used primarily for closed cell spray foam insulation HFC 245fa is also known as pentafluoropropane and by its chemical name 1 1 1 3 3 pentafluoropropane Pentafluoropropane NamesPreferred IUPAC name 1 1 1 3 3 PentafluoropropaneOther names R 245fa HFC 245fa Enovate 3000 Genetron 245fa AC1Q4KND UNII TA9UOF49CYIdentifiersCAS Number 460 73 1 1 3D model JSmol Interactive imageChemSpider 61345ECHA InfoCard 100 114 041PubChem CID 68030UNII TA9UOF49CY YCompTox Dashboard EPA DTXSID6052110InChI InChI 1S C3H3F5 c4 2 5 1 3 6 7 8 h2H 1H2Key MSSNHSVIGIHOJA UHFFFAOYSA NInChI 1 C3H3F5 c4 2 5 1 3 6 7 8 h2H 1H2Key MSSNHSVIGIHOJA UHFFFAOYAISMILES FC F CC F F FPropertiesAppearance colorless gasDensity 1404 1 kg m3 liquid at 1 bar 0 C 5 84 kg m3 vapor at 1 bar 15 C 2 Boiling point 14 9 3 C 58 8 F 288 0 K Solubility in water 7 18 g L 4 log P 1 68HazardsOccupational safety and health OHS OSH Main hazards Simple AsphyxiantFlash point 24 963 C 12 933 F 248 187 K Autoignitiontemperature 412 C 774 F 685 K 4 Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Infobox references Contents 1 Environmental Effects 2 Economics 3 Manufacturing History 4 See also 5 References 6 External linksEnvironmental Effects EditUnlike 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 5 It does have a high global warming potential of 950 950 times the global warming effect of CO2 6 7 Honeywell refers to this as acceptable in their literature but they don t include the actual number Economics EditOne of the disadvantages of R 245fa is its cost In 2000 R 141b cost one US dollar per pound whereas R 245fa cost 2 50 to 4 00 per pound 8 As of 2007 and prior to Sinochem s production it was already a high volume production chemical with over 1 million pounds produced annually 5 Manufacturing History EditPentafluoropropane is produced by Honeywell and in Asia by Sinochem 9 Honeywell markets HFC 245fa under the Enovate and Genetron 245fa brand names AlliedSignal who adopted the Honeywell name after acquiring it decided in 1999 to provide a non ozone depleting blowing agent as an alternative for dichlorofluoroethane HCFC 141b and trichlorofluoromethane CFC 11 Competitors Atofina and General Electric pursued strategies using other agents See also EditBuilding insulation Fiberglass HoneywellReferences Edit 1 1 1 3 3 pentafluoropropane CAS 460 73 1 Columbia Analytical Services retrieved May 13 2012 Isobaric Properties for 1 1 1 3 3 Pentafluoropropane R245fa National Institute of Standards and Technology retrieved 24 January 2021 Genetron 245fa R 245fa European Refrigerants a b Genetron 245fa Material Safety Data Sheet PDF Honeywell September 2000 MSDS Number GTRN 0040 retrieved May 29 2012 permanent dead link a b HFC 245fa Product Stewardship Summary PDF Honeywell December 2007 retrieved 13 May 2012 Other Gases Hydrofluorocarbons Perfluorocarbons and Sulfur Hexafluoride U S Energy Information Administration retrieved 13 May 2012 JACC 044 1 1 1 3 3 pentafluoropropane HFC 245fa CAS No 460 73 1 European Centre for Ecotoxicology June 2004 retrieved 13 May 2012 McCoy Michael October 30 2000 Regulatory Issues Heat Up For Blowing Agents Chemical and Engineering News Online 78 44 22 23 doi 10 1021 cen v078n044 p022 ISSN 0009 2347 archived from the original on August 23 2011 retrieved May 3 2020 Sinochem and Honeywell Announce Formation of Joint Venture in China Sinochem Group October 10 2011External links EditHoneywell s Enovate Homepage Housingzone com Article about Solving Problems with Spray Foam Retrieved from https en wikipedia org w index php title Pentafluoropropane amp oldid 1111472164, wikipedia, wiki, book, books, library,
