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{{chembox |
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{{chembox |
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| verifiedrevid = 402510970 |
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| verifiedrevid = 411560223 |
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| Name = Octafluoropropane |
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| ImageFile = Octafluoropropane.png |
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| Name = Octafluoropropane |
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| ImageFile_Ref = {{chemboximage|correct|??}} |
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<!-- | ImageSize = 150px --> |
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| ImageName = Octafluoropropane |
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| ImageFileL1 = Octafluoropropane.png |
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| ImageSizeL1 = 130 |
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| IUPACName = Octafluoropropane |
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| ImageAltL1 = Structural formula of octafluoropropane |
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| OtherNames = Freon 218<br />Perfluoropropane<br />RC 218, PFC 218<br />R218<br />Flutec PP30<br />genetron 218 |
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| ImageFileR1 = Octafluoropropane 3D ball.png |
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| ImageSizeR1 = 135 |
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| ImageAltR1 = Ball-and-stick model of octafluoropropane |
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| PIN = Octafluoropropane |
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| OtherNames = Freon 218<br />Perfluoropropane<br />RC 218, PFC 218<br />R-218<br />Flutec PP30<br />Genetron 218 |
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| Section1 = {{Chembox Identifiers |
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| Section1 = {{Chembox Identifiers |
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| DrugBank_Ref = {{drugbankcite|changed|drugbank}} |
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| SMILES = FC(F)(F)C(F)(F)C(F)(F)F |
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| DrugBank = DB00556 |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChEBI_Ref = {{ebicite|changed|EBI}} |
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| ChEBI = 31980 |
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| SMILES = FC(F)(F)C(F)(F)C(F)(F)F |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChemSpiderID = 6192 |
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| ChemSpiderID = 6192 |
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| PubChem = 6432 |
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| PubChem = 6432 |
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| ChEMBL_Ref = {{ebicite|changed|EBI}} |
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| ChEMBL_Ref = {{ebicite|correct|EBI}} |
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| ChEMBL = 1663 |
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| ChEMBL = 1663 |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| UNII = CK0N3WH0SR |
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| UNII = CK0N3WH0SR |
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| KEGG_Ref = {{keggcite|correct|kegg}} |
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| KEGG = D01738 |
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| KEGG = D01738 |
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| InChI = 1/C3F8/c4-1(5,2(6,7)8)3(9,10)11 |
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| InChI = 1/C3F8/c4-1(5,2(6,7)8)3(9,10)11 |
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| StdInChIKey = QYSGYZVSCZSLHT-UHFFFAOYSA-N |
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| StdInChIKey = QYSGYZVSCZSLHT-UHFFFAOYSA-N |
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| CASNo = 76-19-7 |
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| CASNo = 76-19-7 |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| RTECS = TZ5255000 |
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| RTECS = TZ5255000 |
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| Section2 = {{Chembox Properties |
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| Section2 = {{Chembox Properties |
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| C = 3 | F = 8 |
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| Formula = C<sub>3</sub>F<sub>8</sub> |
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| Appearance = Colorless gas |
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| MolarMass = 188.02 g/mol |
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| Density = 8.17 g/L |
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| Appearance = Colorless gas with<br />faintly sweet odor |
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| Solubility = |
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| Density = 8.17 g/l, gas |
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| Solubility = |
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| MeltingPtC = -147.6 |
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| MeltingPt_notes = |
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| MeltingPt = -183 °C (90.15 K) |
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| BoilingPt = -36.7 °C (236.45 K) |
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| BoilingPtC = -36.7 |
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| BoilingPt_notes = |
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}} |
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| CriticalTP=345.05 K (71.90 °C), 26.8 bar |
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| Viscosity = 0.000125 ] (0 °C)<ref name=enzy>{{cite web | url = http://encyclopedia.airliquide.com/encyclopedia.asp?GasID=47&CountryID=19&LanguageID=2 | title = Encyclopédie des gaz | publisher = air liquide | access-date = 2008-01-22 | archive-date = 2016-03-03 | archive-url = https://web.archive.org/web/20160303235442/http://encyclopedia.airliquide.com/encyclopedia.asp?GasID=47&CountryID=19&LanguageID=2 | url-status = dead }}</ref> |
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| ThermalConductivity = 13.8 mW/(m·K)<ref name=enzy /> |
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| VaporPressure = 792 kPa (21.1 °C)<ref name=enzy /> |
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}} |
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| Section3 = {{Chembox Structure |
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| Section3 = {{Chembox Structure |
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| Dipole = 0.014 ] |
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| Dipole = 0.014 ] |
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| Section4 = {{Chembox Thermochemistry |
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|HeatCapacity =149 J/(mol·K) |
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}} |
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| Section7 = {{Chembox Hazards |
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| Section7 = {{Chembox Hazards |
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| ExternalMSDS = |
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| ExternalSDS = |
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| MainHazards = Suffocation |
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| MainHazards = Simple asphyxiant and greenhouse gas |
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| NFPA-H = 1 |
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| NFPA-H = 1 |
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| NFPA-F = |
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| NFPA-F = 0 |
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| NFPA-R = |
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| NFPA-R = 0 |
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| FlashPt = N/A |
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| NFPA-S = SA |
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| FlashPt = N/A |
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| RSPhrases = R: ?<br /> S: ? |
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| GHSPictograms = {{GHS04}} |
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| HPhrases = {{H-phrases|280}} |
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| PPhrases = {{P-phrases|410+403}} |
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| Section8 = {{Chembox Related |
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| Section8 = {{Chembox Related |
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| Function = ]s |
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| OtherFunction_label = ]s |
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| OtherFunctn = ]<br />] |
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| OtherFunction = ]<br />] |
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| OtherCpds = ] |
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| OtherCompounds = ] |
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}} |
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'''Octafluoropropane''' (C<sub>3</sub>F<sub>8</sub>) is a ] non-flammable ] that can be produced either by ] or by the ] using ].<ref>{{cite journal |
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'''Octafluoropropane''' (C<sub>3</sub>F<sub>8</sub>) is the ] counterpart to the hydrocarbon ]. This non-flammable and non-toxic synthetic substance has applications in ] production and medicine. It is also an extremely potent ]. |
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| title = Synthesis of Fluorocarbons |
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==Manufacture== |
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| author = R. D. Fowler, W. B. Buford III, J. M. Hamilton, Jr., R. G .Sweet, C. E. Weber, J. S. Kasper, and I. Litant |
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Octafluoropropane can be produced either by ] or by the ] using ].<ref>{{cite journal |
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| journal = Ind. Eng. Chem. |
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| title = Synthesis of Fluorocarbons |
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| year = 1947 |
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| vauthors = Fowler RD, Buford III WB, Hamilton Jr JM, Sweet RG, Weber CE, Kasper JS, Litant I |
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| volume = 39 |
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| journal = Ind. Eng. Chem. |
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| issue =3 |
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| pages = 292–298 |
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| year = 1947 |
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| volume = 39 |
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| doi = 10.1021/ie50447a612}}</ref> |
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| issue =3 |
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| pages = 292–298 |
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| doi = 10.1021/ie50447a612 |
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}}</ref> |
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==Applications== |
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==Applications== |
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In the electronics industry, octafluoropropane is mixed with oxygen and used as a ] material for ] layers in semiconductor applications, as oxides are selectively etched versus their metal substrates. <ref>{{cite journal |
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In the electronics industry, octafluoropropane is mixed with ] and used as a ] material for ] layers in semiconductor applications, as oxides are selectively etched versus their metal substrates.<ref>{{cite journal |
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| title = Plasma-assisted etching |
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| title = Plasma-assisted etching |
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| journal = Plasma Chemistry and Plasma Processing |
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| journal = Plasma Chemistry and Plasma Processing |
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| volume = 2 |
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| volume = 2 |
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| issue = 1 |
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| issue = 1 |
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| year = 1982 |
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| year = 1982 |
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| doi =10.1007/BF00566856 |
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| doi =10.1007/BF00566856 |
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| pages = 1–41 |
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| pages = 1–41 |
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| author = Coburn, J. W.}} |
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| author = Coburn, J. W.| s2cid = 95361338 |
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}} |
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</ref> |
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</ref> |
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In medicine, octafluoropropane may compose the gas cores of microbubble contrast agents used in ]. Octafluoropropane microbubbles reflects sound waves well and are used to improve the ultrasound signal backscatter. It is also used in pars plana ] procedures where a retina hole or tear is repaired. The gas acts to provide a long-term tamponade, or plug, of a retinal hole/tear and allows re-attachment of the retina to occur over the following several days post-op. |
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In medicine, octafluoropropane may compose the gas cores of microbubble contrast agents used in ]. Octafluoropropane microbubbles reflect sound waves well and are used to improve the ultrasound signal backscatter. |
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It is used in eye surgery, such as pars plana ] procedures where a ] 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. |
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Under the name '''R-218''', octafluoropropane is used in other industries as a component of refrigeration mixtures. |
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Under the name '''R-218''', octafluoropropane is used in other industries as a component of refrigeration mixtures. |
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It has been featured in some plans for ]. With a greenhouse gas effect 24,000 times greater than ] (CO<sub>2</sub>), octafluoropropane could dramatically reduce the time and resources it takes to terraform Mars.<ref>{{cite conference| author =D. Rogers| date =17–21 October 2005| title =Studies in the Future of Experimental Terraforming| conference =56th International Astronautical Congress of the International Astronautical Federation| publisher =International Academy of Astronautics, and the International Institute of Space Law| location =Fukuoka, Japan| url =http://pdf.aiaa.org/preview/CDReadyMIAF05_1429/PVIAC-05-D4.1.06.pdf}}{{dead link|date=February 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> |
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It has featured in some plans for ]ing ].<ref>{{cite conference |
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| author = D. Rogers |
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| coauthors = |
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| date = 17-21 |
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| year = 2005 |
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| month = October |
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| title = Studies in the Future of Experimental Terraforming |
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| conference = 56th International Astronautical Congress of the International Astronautical Federation |
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| publisher = International Academy of Astronautics, and the International Institute of Space Law |
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| location = Fukuoka, Japan |
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| pages = |
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| url = http://pdf.aiaa.org/preview/CDReadyMIAF05_1429/PVIAC-05-D4.1.06.pdf |
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}}</ref> |
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It is the active liquid in PICO-2L dark matter bubble detector (joined ] and ] collaborations). |
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==Liquid phase== |
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* Liquid density (1.013 bar at boiling point) : 1601 kg/m³ |
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* Liquid/gas equivalent (1.013 bar and 15 °C (59 °F)) : 196 vol/vol |
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==Gallery== |
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* Latent heat of vaporization (1.013 bar at boiling point) : 104.25 kJ/kg <ref name=enzy>{{cite web |
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<gallery mode="packed" heights="200"> |
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| url = http://encyclopedia.airliquide.com/encyclopedia.asp?GasID=47&CountryID=19&LanguageID=2 |
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File:PFC-218 mm.png|PFC-218 measured by the Advanced Global Atmospheric Gases Experiment () in the lower atmosphere (]) at stations around the world. Abundances are given as pollution free monthly mean mole fractions in ]. |
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| title =Encyclopédie des gaz |
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</gallery> |
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| publischer = air liquide}}</ref> |
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==Gaseous phase== |
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* Gas density (1.013 bar at boiling point) : 10.3 kg/m³ |
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* Gas density (1.013 bar and 15 °C (59 °F)) : 8.17 kg/m³ |
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* Compressibility Factor (Z) (1.013 bar and 15 °C (59 °F)) : 0.975 |
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* Specific gravity (air = 1) (1.013 bar and 21 °C (70 °F)) : 6.683 |
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* Specific volume (1.013 bar and 21 °C (70 °F)) : 0.125 m³/kg |
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* Viscosity (1.013 bar and 0 °C (32 °F)) : 0.000125 Poise |
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* Thermal conductivity (1.013 bar and 0 °C (32 °F)) : 12.728 mW/(m·K) |
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* Thermal Conductivity, Gas @ 101.325 kPa and 25 °C: 13.8 mW/(m·K) |
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* Vapour Pressure @ 21.1 °C: 792 kPa <ref name=enzy /> |
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==Major hazards== |
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*] |
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==References== |
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==References== |
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==External links== |
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==External links== |
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