| 词条 | Octafluoropropane |
| 释义 |
| Verifiedimages = changed | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 411560223 | Name = Octafluoropropane | ImageFile_Ref = {{chemboximage|correct|??}} | ImageFileL1 = Octafluoropropane.png | ImageSizeL1 = 130 | ImageAltL1 = Structural formula of octafluoropropane | ImageFileR1 = Octafluoropropane 3D ball.png | ImageSizeR1 = 135 | ImageAltR1 = Ball-and-stick model of octafluoropropane | IUPACName = Octafluoropropane | OtherNames = Freon 218 Perfluoropropane RC 218, PFC 218 R218 Flutec PP30 genetron 218 |Section1={{Chembox Identifiers | DrugBank_Ref = {{drugbankcite|changed|drugbank}} | DrugBank = DB00556 | ChEBI_Ref = {{ebicite|changed|EBI}} | ChEBI = 31980 | SMILES = FC(F)(F)C(F)(F)C(F)(F)F | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 6192 | PubChem = 6432 | ChEMBL_Ref = {{ebicite|correct|EBI}} | ChEMBL = 1663 | UNII_Ref = {{fdacite|correct|FDA}} | UNII = CK0N3WH0SR | KEGG_Ref = {{keggcite|correct|kegg}} | KEGG = D01738 | InChI = 1/C3F8/c4-1(5,2(6,7)8)3(9,10)11 | InChIKey = QYSGYZVSCZSLHT-UHFFFAOYAL | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/C3F8/c4-1(5,2(6,7)8)3(9,10)11 | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = QYSGYZVSCZSLHT-UHFFFAOYSA-N | CASNo = 76-19-7 | CASNo_Ref = {{cascite|correct|CAS}} | RTECS = TZ5255000 |Section2={{Chembox Properties | Formula = C3F8 | MolarMass = 188.02 g/mol | Appearance = Colorless gas with faintly sweet odor | Density = 8.17 g/l, gas | Solubility = | MeltingPtC = -183 | MeltingPt_notes = | BoilingPtC = -36.7 | BoilingPt_notes = |Section3={{Chembox Structure | Dipole = 0.014 D |Section7={{Chembox Hazards | ExternalSDS = | MainHazards = Suffocation | NFPA-H = 1 | NFPA-F = 0 | NFPA-R = 0 | FlashPt = N/A | RSPhrases = R: ? S: ? |Section8={{Chembox Related | OtherFunction_label = halocarbons | OtherFunction = Tetrafluoromethane Hexafluoroethane | OtherCompounds = Propane }}Octafluoropropane (C3F8) is a fluorocarbon non-flammable greenhouse gas that can be produced either by electrochemical fluorination or by the Fowler process using cobalt fluoride.[1] ApplicationsIn the electronics industry, octafluoropropane is mixed with oxygen and used as a plasma etching material for SiO2 layers in semiconductor applications, as oxides are selectively etched versus their metal substrates.[2] In medicine, octafluoropropane may compose the gas cores of microbubble contrast agents used in contrast-enhanced ultrasound. Octafluoropropane microbubbles reflect sound waves well and are used to improve the ultrasound signal backscatter. It is used in eye surgery, such as pars plana vitrectomy procedures where a retina hole or tear is repaired. The gas provides a long-term tamponade, or plug, of a retinal hole or tear and allows re-attachment of the retina to occur over the several days following the procedure. Under the name R-218, octafluoropropane is used in other industries as a component of refrigeration mixtures. It has been featured in some plans for terraforming Mars. With a greenhouse gas effect 24,000 times greater than CO2, octafluoropropane could dramatically reduce the time and resources it takes to terraform Mars.[3] It is the active liquid in PICO-2L dark matter bubble detector (joined PICASSO and COUPP collaborations). Liquid phase
Gaseous phase
Major hazards
References1. ^{{cite journal | title = Synthesis of Fluorocarbons| vauthors = Fowler RD, Buford III WB, Hamilton Jr JM, Sweet RG, Weber CE, Kasper JS, Litant I| journal = Ind. Eng. Chem.| year = 1947| volume = 39| issue =3| pages = 292–298| doi = 10.1021/ie50447a612 }} 2. ^{{cite journal| title = Plasma-assisted etching| journal = Plasma Chemistry and Plasma Processing| volume = 2| issue = 1 | year = 1982| doi =10.1007/BF00566856| pages = 1–41| author = Coburn, J. W.}} 3. ^{{cite conference| author =D. Rogers| coauthors =| date =17–21 October 2005| title =Studies in the Future of Experimental Terraforming| conference =56th International Astronautical Congress of the International Astronautical Federation| conferenceurl =| booktitle =| editor =| others =| volume =| edition =| publisher =International Academy of Astronautics, and the International Institute of Space Law| location =Fukuoka, Japan| pages =| url =http://pdf.aiaa.org/preview/CDReadyMIAF05_1429/PVIAC-05-D4.1.06.pdf| format =| accessdate =| doi =| id =| oclc =}}{{dead link|date=February 2018 |bot=InternetArchiveBot |fix-attempted=yes }} 4. ^1 {{cite web| url = http://encyclopedia.airliquide.com/encyclopedia.asp?GasID=47&CountryID=19&LanguageID=2| title =Encyclopédie des gaz| publisher = air liquide}} External links
2 : Fluorocarbons|Refrigerants |
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