Fluoromethane Identifiers Abbreviations R41 CAS number , (2H3) , (13C) PubChem , (11C) , (13C) , (17F), (18F) ,(2H3) ChemSpider , (11C) , (13C) , (17F) , (18F) ,(2H3) EC number UN number UN 2454 KEGG MeSH ChEBI ChEMBL Beilstein Reference 1730725 Gmelin Reference 391 Jmol-3D images Image 1 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
131.4 K (-141.8 °C)
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 S-phrases , , , , , , , , NFPA 704 (what is: /?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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) plus fluorine, minus a hydrogen. 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).
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.
Halomethanes Monosubstituted Disubstituted Trisubstituted
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