Fluoromethane

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Fluoromethane

IUPAC name Fluoromethane
Other names Freon 41 Methyl fluoride Halocarbon 41 Monofluoromethane
Identifiers
Abbreviations	R41
CAS number	593-53-3^Y, 558-21-4 (²H₃) ^Y, 20666-44-8 (¹³C) ^Y
PubChem	11638 (²H₃) ^Y, 450707 (¹¹C) ^Y, 12336970 (¹³C) ^Y, 9833918 (¹⁷F), 450725 (¹⁸F) ^Y, 11638 ^Y
ChemSpider	11148 (²H₃)^Y, 396977 (¹¹C) ^Y, 21170290 (¹³C) ^Y, 8009639 (¹⁷F) ^Y, 396995 (¹⁸F) ^Y, 11148 ^Y
EC number	209-796-6
UN number	UN 2454
KEGG	C11147^Y
MeSH	Fluoromethane
ChEBI	CHEBI:28826^Y
ChEMBL	CHEMBL116838^Y
Beilstein Reference	1730725
Gmelin Reference	391
Jmol-3D images	Image 1
SMILES FC
InChI InChI=1S/CH3F/c1-2/h1H3^Y Key: NBVXSUQYWXRMNV-UHFFFAOYSA-N^Y InChI=1/CH3F/c1-2/h1H3 Key: NBVXSUQYWXRMNV-UHFFFAOYAF
Properties
Molecular formula	CH₃F
Molar mass	34.03 g/mol
Appearance	Colorless, odorless gas
Density	1.4397 g/L 0.557 g/cm³ (liquid) at saturation pressure at 25 °C
Melting point	131.4 K (-141.8 °C)
Boiling point	195.0 K (-78.2 °C)
Solubility in water	1.66 l/kg (2.295 g/l)
Vapor pressure	3.3 MPa
Hazards
EU classification	Very flammable (F+)
R-phrases	R12
S-phrases	S9, S16, S23, S24/25, S26, S28, S33, S36/37/39, S60
NFPA 704	4 1 0
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

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 the manufacture of semiconductor and electronic products. In the presence of an RF field fluoromethane will dissociate into fluoride ions that selectively etch silicon compound films (reactive-ion etching).

Fluoromethane has an agreeable ether-like odor and is also narcotic in high concentrations. Fluoromethane is highly flammable and burns in air with evolution of highly toxic hydrogen fluoride. The flame is colorless, similar to alcohol.

Bond energy of C-F is 552 kJ/mol and its length is 0.139 nm (typically 0.14 nm). Its molecular geometry is tetrahedral.

Its specific heat capacity is C_p = 38.171 J.mol^-1.K^-1 at 25 °C. Critical point of fluoromethane is at 44.9 °C (318.1 K) and 6.280 MPa.

External links

v t e Halomethanes

Monosubstituted	CH₃F CH₃Cl CH₃Br CH₃I

Disubstituted	CH₂F₂ CH₂ClF CH₂BrF CH₂FI CH₂Cl₂ CH₂BrCl CH₂ClI CH₂Br₂ CH₂BrI CH₂I₂

Trisubstituted	CHF₃ CHClF₂ CHBrF₂ CHF₂I CHCl₂F CHBrClF CHClFI CHBr₂F CHBrFI CHFI₂ CHCl₃ CHBrCl₂ CHCl₂I CHBr₂Cl CHBrClI CHClI₂ CHBr₃ CHBr₂I CHBrI₂ CHI₃

Tetrasubstituted	CF₄ CClF₃ CBrF₃ CF₃I CCl₂F₂ CBrClF₂ CClF₂I CBr₂F₂ CBrF₂I CF₂I₂ CCl₃F CBrCl₂F CCl₂FI CBr₂ClF C*BrClFI CClFI₂ CBr₃F CBr₂FI CBrFI₂ CFI₃ CCl₄ CBrCl₃ CCl₃I CBr₂Cl₂ CBrCl₂I CCl₂I₂ CBr₃Cl CBr₂ClI CBrClI₂ CClI₃ CBr₄ CBr₃I CBr₂I₂ CBrI₃ CI₄

* Chiral compound.

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