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{{chembox |
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| verifiedrevid = 305093516 |
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| verifiedrevid = 413847431 |
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| ImageFileL1_Ref = {{chemboximage|correct|??}} |
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| ImageFileL1 = Pentafluoroethane.png |
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| ImageFileL1 = 1,1,1,2,2-Pentafluoroethane-2D-skeletal.png |
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| ImageSizeL1 = 120px |
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| ImageFileR1 = 1,1,1,2,2-Pentafluoroethane.svg |
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| ImageFileR1 = 1,1,1,2,2-Pentafluoroethane.svg |
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| ImageSizeR1 = 150px |
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| ImageSizeR1 = 150px |
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| IUPACName = 1,1,1,2,2-Pentafluoroethane |
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| PIN = Pentafluoroethane |
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| OtherNames = Pentafluoroethane, Genetron HFC 125, Khladon 125, Suva 125, Freon 125, Fc-125, R-125 |
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| OtherNames = Pentafluoroethane, Genetron HFC 125, Khladon 125, Suva 125, Freon 125, Fc-125, R-125 |
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| Section1 = {{Chembox Identifiers |
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|Section1={{Chembox Identifiers |
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| CASNo_Ref = {{cascite}} |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo = 354-33-6 |
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| CASNo = 354-33-6 |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| EINECS = 206-557-8 |
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| PubChem = 9633 |
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| UNII = 6TQ8593LRQ |
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| SMILES = FC(F)C(F)(F)F |
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| EINECS = 206-557-8 |
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| PubChem = 9633 |
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| InChI = 1/C2HF5/c3-1(4)2(5,6)7/h1H |
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| SMILES = FC(F)C(F)(F)F |
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}} |
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| InChI = 1/C2HF5/c3-1(4)2(5,6)7/h1H |
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| Section2 = {{Chembox Properties |
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| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}} |
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| Formula = C<sub>2</sub>HF<sub>5</sub> |
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| ChemSpiderID = 9256 |
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| MolarMass = 120.02 g/mol |
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| InChIKey = GTLACDSXYULKMZ-UHFFFAOYAX |
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| Appearance = Colourless gas |
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| StdInChI_Ref = {{stdinchicite|changed|chemspider}} |
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| Density = 1.24 g/cm<sup>3</sup> |
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| StdInChI = 1S/C2HF5/c3-1(4)2(5,6)7/h1H |
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| MeltingPt = -103.0 °C |
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| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}} |
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| BoilingPt = -48.5 °C |
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| StdInChIKey = GTLACDSXYULKMZ-UHFFFAOYSA-N |
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| Solubility = |
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| Section7 = {{Chembox Hazards |
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|Section2={{Chembox Properties |
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| Formula = C<sub>2</sub>HF<sub>5</sub> |
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| MainHazards = |
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| MolarMass = 120.02{{nbsp}}g/mol |
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| FlashPt = |
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| Appearance = Colourless gas. Has a faint, almost imperceptible odor |
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| Autoignition = |
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| Density = 1.53{{nbsp}}g/cm<sup>3</sup> (liquid at −48.5{{nbsp}}°C)<ref name="Yaws">{{cite book |title= Kirk-Othmer Encyclopedia of Chemical Technology|publisher= Wiley |isbn= 9780471238966 }}</ref> |
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| MeltingPtC = −103.0 |
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| MeltingPt_notes = |
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| BoilingPtC = −48.5 |
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| VaporPressure = 1414.05{{nbsp}}kPa (at 25 °C) |
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| BoilingPt_notes = |
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| Solubility = |
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|Section7={{Chembox Hazards |
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| MainHazards = |
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| FlashPt = |
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| AutoignitionPt = |
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'''Pentafluoroethane''' is a ] that has zero ]. It has the formula CF<sub>3</sub>CHF<sub>2</sub>. Although it has zero ozone depletion potential, it has high ], reported by the EPA as 3450 times that of carbon dioxide.<ref> EPA reported GWP published Mar-2006</ref> |
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Pentafluoroethane in an ] mixture with ] is known as ], a common replacement for various ]s (aka '']'') in new refrigerant systems. Pentafluoroethane is also used as a ] in ]s. |
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'''Pentafluoroethane''' is a ] with the formula CF<sub>3</sub>CHF<sub>2</sub>. Pentafluoroethane is currently used as a ] (known as R-125) and also used as a ] in ]s. |
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Pentafluoroethane does not deplete ozone so it has replaced earlier fluorinated chemicals that did. However while it has zero ], it has high ], reported by the ] (EPA) as 3450 times that of carbon dioxide.<ref>{{Cite web |date=March 29, 2006 |title=Protection of Stratospheric Ozone: Notice 20 for Significant New Alternatives Policy Program |url=http://www.epa.gov/EPA-AIR/2006/March/Day-29/a3030.htm |url-status=dead |archive-url=https://archive.today/20120729040440/http://www.epa.gov/EPA-AIR/2006/March/Day-29/a3030.htm |archive-date=29 Jul 2012 |work=Federal Register Environmental Documents |publisher=Environmental Protection Agency}}</ref> |
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==Fire Suppression Systems== |
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HFC-125 (ECARO-25 / FE-25 / NAF S 125) can be used in clean agent fire suppression systems also referred to as ] Agent. It is generally used in situations where water from a fire sprinkler would damage expensive equipment or where water-based fire protection is impractical, such as museums, banks, clean rooms and hospitals . HFC-125 does not deplete ozone (ODP 0) The HFC-125 clean agent is stored in a pressurized container and introduced into the hazard as a gas. The agent is odorless, colorless, electrically non-conductive, non-corrosive, and leaves no residue. It is used in occupied enclosed areas that contain high-value assets. |
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==Refrigerant== |
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HFC-125 suppresses fire by absorbing heat energy at its molecular level faster than the heat can be generated, so the fire cannot sustain itself. It also forms free radicals to chemically interfere with the chain reaction of the combustion process. This makes it a highly effective fire fighting agent that is safe for people and causes no damage to equipment. |
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] |
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Pentafluoroethane in a near ] with ] is known as ], a common replacement for various ]s (commonly known as ''Freon'') in new refrigerant systems. |
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==Fire suppression systems== |
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The HFC-125 fire suppression agent is a non-ozone depleting replacement for ]. In addition, HFC-125 leaves no residue on valuable equipment after discharge.<ref></ref> |
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HFC-125 (ECARO-25 / FE-25 / NAF S 125) is a ] agent which can be used in clean agent fire suppression systems. In addition, HFC-125 leaves no residue on valuable equipment and material after discharge.<ref>{{Cite web |title=ECARO-25® Clean Agent Fire Suppression - HFC-125 |url=http://www.fike.com/products/ecaro-25-clean-agent-fire-suppression-2/ |url-status=dead |archive-url=https://web.archive.org/web/20200806122938/https://www.fike.com/products/ecaro-25-clean-agent-fire-suppression-2/ |archive-date=Aug 6, 2020 |website=Fike}}</ref> It is generally used in situations where water from a fire sprinkler would damage expensive equipment, or where water-based fire protection is impractical, such as museums, banks, clean rooms and hospitals. The HFC-125 clean agent is stored in a pressurized container and introduced into the hazard as a gas. The agent is odorless, colorless, electrically non-conductive, non-corrosive, and leaves no residue. It is used in occupied enclosed areas that contain high-value assets. |
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HFC-125 suppresses fire by absorbing heat energy at its molecular level faster than the heat can be generated, so the fire cannot sustain itself. It also forms free radicals to chemically interfere with the chain reaction of the combustion process. This makes it a highly effective fire fighting agent that is safe for people and causes no damage to equipment. |
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HFC-125 is considered a Clean Agent and is therefore included in NFPA 2001 - Standard for Clean Agent Fire Extinguishing Systems. |
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HFC-125 is considered a Clean Agent and is therefore included in the ]'s 2001 - Standard for Clean Agent Fire Extinguishing Systems. |
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When introduced to the market HFC-125 was not considered safe for use in occupied spaces. The ] SNAP (]) listing reflected this. Following the introduction and acceptance of the PBPK model in the NFPA standard NFPA 2001 Standard on Clean Agent Fire Extinguishing Systems 2004 Edition, the restriction was relaxed and now HFC-125 can be used in occupied hazards. Generally, class B (flammable liquid) hazards require concentrations that exceed the agent NOAEL so extra precautions must be taken to avoid prolonged exposure to the agent. |
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==Environmental impact== |
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ECARO-25 is a registered trademark of Fike Corporation. FE-25 is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates. |
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) in the lower atmosphere (]) at stations around the world. Abundances are given as pollution free monthly mean mole fractions in ].]] |
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NAF S 125 is a registered trademark of Safety Hi-Tech S.r.l. |
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] |
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HFC-125 is a non-ozone depleting replacement for ]- or ]-containing chemicals such as ]. Due to its global warming potential (GWP) of 3500 times that of CO₂ and ] of 29 years, it is included in the list of controlled substances of the ].<ref>Montreal Protocol Section 1.1. including 2016 Kigali amendment (in effect in 2019)</ref><ref name="AR4">{{cite book|author1=P. Forster|author2=V. Ramaswamy|author3=P. Artaxo|author4=T. Berntsen|author5=R. Betts|author6=D.W. Fahey|author7=J. Haywood|author8=J. Lean|author9=D.C. Lowe|author10=G. Myhre|author11=J. Nganga|author12=R. Prinn|author13=G. Raga|author14=M. Schulz|author15=R. Van Dorland|editor1-last=Solomon|editor1-first=S.|editor2-last=Miller|editor2-first=H.L.|editor3-last=Tignor|editor3-first=M.|editor4-last=Averyt|editor4-first=K.B.|editor5-last=Marquis|editor5-first=M.|editor6-last=Chen|editor6-first=Z.|editor7-last=Manning|editor7-first=M.|editor8-last=Qin|editor8-first=D.|title=Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change|date=2007|publisher=Cambridge University Press|location=Cambridge, United Kingdom and New York, NY, USA|language=en|chapter=Chapter 2: Changes in Atmospheric Constituents and in Radiative Forcing|chapter-url=https://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch2.html|access-date=9 October 2016|archive-date=1 December 2016|archive-url=https://web.archive.org/web/20161201152606/http://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch2.html|url-status=dead}}</ref> |
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When introduced to the market HFC-125 was not considered safe for use in occupied spaces. The US EPA (SNAP) listing reflected this. Following the introduction and acceptance of the PBPK model in the NFPA standard 2001 on Clean Agent Fire Extinguishing Systems 2004 Edition, the restriction was relaxed and now HFC-125 can be used in occupied hazards. Generally, class B (flammable liquid) hazards require concentrations that exceed the agent's ] (NOAEL) so extra precautions must be taken to avoid prolonged exposure to the agent. |
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At high temperatures, pentafluoroethane will decompose and produce ]. This is observable as presence of sharp, pungent odour, which can be perceived in concentrations far below a dangerous level. Other decomposition products include ], ] and ]. Prior to re-entry of a room where HFC-125 system has been activated to suppress a fire, the atmosphere should be tested. An added to pentafluoroethane is able to reduce the amount of hydrogen fluoride. |
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==Brands== |
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ECARO-25 is a registered ] of Fike Corporation. FE-25 is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates. NAF S 125 (HFC-125 plus Acid Scavenging Additive) is a trademark of Safety Hi-Tech. |
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==References== |
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==References== |
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{{reflist}} |
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{{reflist}} |
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* {{Cite web |title=Pentafluoroethane (CASRN 354-33-6) |url=http://www.epa.gov/iris/subst/0683.htm |url-status=dead |archive-url=https://web.archive.org/web/20121026070112/http://www.epa.gov/iris/subst/0683.htm |archive-date=Oct 26, 2012 |website=Integrated Risk Information System |publisher=United States Environmental Protection Agency}} |
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* {{Cite web |title=NAF® S 125 |url=http://www.safetyhitech.com/en/products/naf-fire-ext-agents/naf-s-125 |url-status=dead |archive-url=https://web.archive.org/web/20221007152846/https://www.safetyhitech.com/en/products/naf-fire-ext-agents/naf-s-125 |archive-date=Oct 7, 2022 |website=Safety Hi-Tech}} |
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* {{Cite web |title=ECARO-25 fire suppression systems |url=http://fike.com/products/fsecaro.asp |url-status=dead |archive-url=https://web.archive.org/web/20090122075136/http://fike.com/products/fsecaro.asp |archive-date=Jan 22, 2009 |website=Fike}} |
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* {{Cite web |title=Protecting What Matters Most With DuPont™ FE-25™ |url=http://www2.dupont.com/FE/en_US/products/fe25.html |url-status=dead |archive-url=https://web.archive.org/web/20150428182513/http://www2.dupont.com/FE/en_US/products/fe25.html |archive-date=2015-04-28 |website=DuPont}} |
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* {{Cite web |title=FE25 - HFC125 Extinguishing System |url=http://www.sinerjiyangin.com/fe25_eng.html |url-status=deviated |archive-url=https://web.archive.org/web/20210429160329/http://www.sinerjiyangin.com/fe25_eng.html |archive-date=Apr 29, 2021 |website=Sinerji Yangın ve Güvenlik Sistemleri}} |
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==External links== |
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==External links== |
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{{Authority control}} |
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{{DEFAULTSORT:Pentafluoroethane}} |
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{{DEFAULTSORT:Pentafluoroethane}} |
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