Hydrofluoroether (original) (raw)
Hydrofluoroethers (HFE) are a class of organic solvents. As non-ozone-depleting chemicals, they were developed originally as a replacement for CFCs, HFCs, HCFCs, and PFCs. They are typically colorless, odorless, tasteless, low toxicity, low viscosity, and liquid at room temperature. The boiling point of HFEs vary from 50 °C to nearly 100 °C. Although 3M first developed HFEs, other manufacturers have begun producing them.
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| dbo:abstract | Hydrofluorether (HFE) gehören zu den fluorierten organischen Verbindungen. Ursprünglich wurden sie als Ersatz für ozonschädigende Chemikalien wie FCKW, HFKW, und PFC entwickelt. Sie sind farb- und fast geruchslos, geschmacksneutral, besitzen eine niedrige Viskosität und haben meist einen Siedepunkt oberhalb der Raumtemperatur. Die atmosphärische Lebensdauer von bekannteren HFE liegt zwischen 0,294 Jahren (HFE-356mff) bis zu 165 Jahren (HFE-125) und ihr Treibhauspotential bezogen auf 100 Jahre zwischen 39 (HFE-356mff) und 15600 (HFE-125). Obwohl es sich damit um Treibhausgase handelt, regelt die US EPA ihre Verwendung nicht, da sie im Vergleich zu alternativen Chemikalien vernachlässigbare Auswirkungen auf den Beitrag des photochemischen Smogs, ein relativ niedriges Treibhauspotential und ein Ozonabbaupotenzial von nahezu null aufweisen. Die Firma 3M verkauft diese Flüssigkeiten unter dem Handelsnamen Novec. Kommerziell verfügbar sind zum Beispiel Methylnonafluor-n-butylether, Methylnonafluor-iso-butylether, und bzw. deren Gemische. (de) Hydrofluoroethers (HFE) are a class of organic solvents. As non-ozone-depleting chemicals, they were developed originally as a replacement for CFCs, HFCs, HCFCs, and PFCs. They are typically colorless, odorless, tasteless, low toxicity, low viscosity, and liquid at room temperature. The boiling point of HFEs vary from 50 °C to nearly 100 °C. Although 3M first developed HFEs, other manufacturers have begun producing them. (en) Gli idrofluoroeteri sono molecole parzialmente fluorurate appartenenti alla classe degli eteri. Si tratta di composti contenenti fluoro, ossigeno, carbonio e idrogeno. Gli HFE α-fluorurati noti come HCFE-235da2 (isoflurano) and HFE-236ea2 (desflurano) sono noti dagli anni sessanta come anestetici e agenti anti infiammatori. Le molecole ad uso industriale, inizialmente sviluppate da 3M, sono composte normalmente dall'unione di una catena di perfluoroetere ad una catena di etere idrogenato. Oggi questo tipo di molecole viene sintetizzato da molte aziende: in Italia (ex Solvay Solexis) produce una classe di HFE chiamata Galden(R)-HFPE. Questa classe di molecole viene utilizzata come sostituto dei CFC per via del fatto che non contribuiscono al buco nell'ozono, hanno un basso tempo di emivita in atmosfera e possiedono le caratteristiche tipiche dei composti perfluorurati: * Ottima resistenza chimica e termica * Basso GWP * Flash point ,fire point e punto di autoignizione assenti. * Biologicamente inerti * Buone proprietà dielettriche Solventi * HFE-7200 (HFE-569sf2) * HFE-7100 (HFE-449s1) * HFE-7500 (3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2,2,2-trifluoromethyl-hexane) * HFE-7000 (HFE-347mcc3) * HFE-236fa Fluidi per cicli frigoriferi * HFE 125 * HFE-134 * HFE-143a * HFE-227me, * HFE-245mf and * HFE-245mc fluidi per trasferimento termico * HFE-43-10pccc124 ((H-Galden 1040x) * HFE-236ca12 ((HG-10) * HFE-338pcc13 ((HG-01) foam blowing agents * HFE-347mcc3 * HFE-347mmy * HFE-245mc * HFE-227me * HFE-254cb2 * HFE-245mf * HFE-245mc * HFE-254pc * HFE-356mec * HFE-227me Agenti anti-fiamma * H Galden 1040x * HFE-356mec3 (it) |
| dbo:wikiPageExternalLink | https://multimedia.3m.com/mws/media/1091997O/3m-novec-engineered-fluids-for-heat-transfer-line-card.pdf |
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| rdfs:comment | Hydrofluoroethers (HFE) are a class of organic solvents. As non-ozone-depleting chemicals, they were developed originally as a replacement for CFCs, HFCs, HCFCs, and PFCs. They are typically colorless, odorless, tasteless, low toxicity, low viscosity, and liquid at room temperature. The boiling point of HFEs vary from 50 °C to nearly 100 °C. Although 3M first developed HFEs, other manufacturers have begun producing them. (en) Hydrofluorether (HFE) gehören zu den fluorierten organischen Verbindungen. Ursprünglich wurden sie als Ersatz für ozonschädigende Chemikalien wie FCKW, HFKW, und PFC entwickelt. Sie sind farb- und fast geruchslos, geschmacksneutral, besitzen eine niedrige Viskosität und haben meist einen Siedepunkt oberhalb der Raumtemperatur. (de) Gli idrofluoroeteri sono molecole parzialmente fluorurate appartenenti alla classe degli eteri. Si tratta di composti contenenti fluoro, ossigeno, carbonio e idrogeno. Gli HFE α-fluorurati noti come HCFE-235da2 (isoflurano) and HFE-236ea2 (desflurano) sono noti dagli anni sessanta come anestetici e agenti anti infiammatori. Questa classe di molecole viene utilizzata come sostituto dei CFC per via del fatto che non contribuiscono al buco nell'ozono, hanno un basso tempo di emivita in atmosfera e possiedono le caratteristiche tipiche dei composti perfluorurati: Solventi Fluidi per cicli frigoriferi (it) |
| rdfs:label | Hydrofluorether (de) Hydrofluoroether (en) Idrofluoroeteri (it) |
| owl:sameAs | freebase:Hydrofluoroether yago-res:Hydrofluoroether wikidata:Hydrofluoroether dbpedia-de:Hydrofluoroether dbpedia-it:Hydrofluoroether https://global.dbpedia.org/id/3WJLV |
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| is dbo:wikiPageWikiLink of | dbr:Perfluoro(2-methyl-3-pentanone) dbr:Global_warming_potential dbr:Liquid_dielectric dbr:Fluorinert dbr:HFE dbr:Immersion_cooling dbr:Novec_7200 |
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