Fluoromethane
{{Chembox
| Verifiedfields = changed
| Watchedfields = changed
| ImageFileL1 = Fluoromethane.svg
| ImageSizeL1 = 100px
| ImageNameL1 = Stick model of fluoromethane
| ImageFileR1 = Fluoromethane-3D-vdW.png
| ImageSizeR1 = 120px
| ImageNameR1 = Spacefill model of fluoromethane
| IUPACName = Fluoromethane
| OtherNames = Freon 41
Methyl fluoride
Halocarbon 41
Monofluoromethane
|Section1={{Chembox Identifiers
| Abbreviations = R41
| ChEMBL_Ref = {{ebicite|correct|EBI}}
| ChEMBL = 116838
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/CH3F/c1-2/h1H3
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = NBVXSUQYWXRMNV-UHFFFAOYSA-N
| CASNo = 593-53-3
| CASNo_Ref = {{cascite|correct|CAS}}
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 54A9X6F0CM
| PubChem = 11638
| ChemSpiderID = 11148
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| EINECS = 209-796-6
| UNNumber = UN 2454
| KEGG_Ref = {{keggcite|correct|kegg}}
| KEGG = C11147
| MeSHName = Fluoromethane
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 28826
| SMILES = FC
| InChI = 1/CH3F/c1-2/h1H3
| InChIKey = NBVXSUQYWXRMNV-UHFFFAOYAF
| Beilstein = 1730725
| Gmelin = 391}}
|Section2={{Chembox Properties
| Formula = CH3F
| MolarMass = 34.03 g/mol
| Appearance = Colourless gas
| Odor = pleasant, ether-like odour at high concentrations
| Density = 1.4397 g/L
0.557 g/cm3 (liquid) at saturation pressure at 25 °C
| MeltingPtC = -137.8
| MeltingPt_ref = {{GESTIS|ZVG= 490961}}
| BoilingPtC = -78.4
| Solubility = 1.66 L/kg (2.295 g/L)
| VaporPressure = 3.3 MPa
}}
|Section3={{Chembox Hazards
| MainHazards =
| FlashPt =
| AutoignitionPt =
| NFPA-H = 1
| NFPA-F = 4
| NFPA-R = 0
| NFPA-S =
| GHSPictograms = {{GHS02}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|220}}
| PPhrases = {{P-phrases|210|377|381|403|410+403}}
}}
| verifiedrevid = 415490902
}}
Fluoromethane, also known as methyl fluoride, Freon 41, Halocarbon-41 and HFC-41, is a non-toxic, liquefiable, and flammable gas at standard temperature and pressure. It is made of carbon, hydrogen, and fluorine. The name stems from the fact that it is methane (CH4) with a fluorine atom substituted for one of the hydrogen atoms. It is used in semiconductor manufacturing processes as an etching gas in plasma etch reactors.{{Ullmann|first1=Günter |last1=Siegemund|first2=Werner|last2=Schwertfeger|first3=Andrew|last3= Feiring|first4=Bruce|last4=Smart|first5=Fred |last5=Behr|first6=Herward|last6=Vogel|first7=Blaine|last7=McKusick|title=Fluorine Compounds, Organic|year=2002|doi=10.1002/14356007.a11_349}}
Fluoromethane (originally called "fluorohydrate of methylene") became the first organofluorine compound to be discovered{{Cite journal |last=Okazoe |first=Takashi |date=2009 |title=Overview on the history of organofluorine chemistry from the viewpoint of material industry |url=https://www.jstage.jst.go.jp/article/pjab/85/8/85_8_276/_article |journal=Proceedings of the Japan Academy, Series B |volume=85 |issue=8 |pages=276–289 |doi=10.2183/pjab.85.276 |pmc=3621566 |pmid=19838009|bibcode=2009PJAB...85..276O }} when it was synthesized by French chemists Jean-Baptiste Dumas and Eugène-Melchior Péligot in 1835 by distilling dimethyl sulfate with potassium fluoride.{{Cite book |last1=Crochard (París) |url=https://books.google.com/books?id=yCpCAAAAcAAJ&pg=PA36 |title=Annales de chimie et de physique |last2=Arago |first2=François |last3=Gay-Lussac |first3=Joseph Louis |date=1835 |publisher=Chez Crochard |pages=36 |language=fr}}
Composition
The compound is the lowest mass member of the hydrofluorocarbon (HFC) family, compounds which contain only hydrogen, fluorine, and carbon. These compounds are related to the chlorofluorocarbons (CFC), but since they do not contain chlorine, are not destructive to the ozone layer.[http://www.rkm.com.au/HALOCARBONS/fluoromethane.html Fluoromethane CH3F] Fluorocarbons are, however, potent greenhouse gasses, and the Kigali Amendment to the Montreal Protocol is an attempt to phase them out due to their contribution to global warming.{{cite web|url=http://theconversation.com/explainer-hydrofluorocarbons-saved-the-ozone-layer-so-why-are-we-banning-them-86672|title=Explainer: hydrofluorocarbons saved the ozone layer, so why are we banning them?|date=2 November 2017 }}
The C−F bond energy is 552 kJ/mol and its length is 0.139 nm. Its molecular geometry is tetrahedral. Its Dipole Moment is 1.85 D.{{fact|date=August 2024}}
Its specific heat capacity (Cp) is 38.171 J·mol−1·K−1 at 25 °C. The critical point of fluoromethane is at 44.9 °C (318.1 K) and 6.280 MPa.
See also
References
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External links
- [http://www.chemnet.ru/rus/handbook/ivtan/168.html Thermochemical data at chemnet.ru]
{{Halomethanes}}
{{fluorine compounds}}
{{Authority control}}