| Fluoromethane | |
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Fluoromethane |
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Other names
Freon 41 Methyl fluoride |
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| Identifiers | |
| Abbreviations | R41 |
| CAS number | 593-53-3 , 558-21-4 (2H3) , 20666-44-8 (13C) |
| PubChem | 11638 (2H3) , 450707 (11C) , 12336970 (13C) , 9833918 (17F), 450725 (18F) , 11638 |
| ChemSpider | 11148 (2H3) , 396977 (11C) , 21170290 (13C) , 8009639 (17F) , 396995 (18F) , 11148 |
| EC number | 209-796-6 |
| UN number | UN 2454 |
| KEGG | C11147 |
| MeSH | Fluoromethane |
| ChEBI | CHEBI:28826 |
| ChEMBL | CHEMBL116838 |
| Beilstein Reference | 1730725 |
| Gmelin Reference | 391 |
| Jmol-3D images | Image 1 |
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| 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
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| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| 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) 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.
Its specific heat capacity is Cp = 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.
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