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Trichlorofluoromethane |
| Trichlorofluoromethane | |
|---|---|
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| IUPAC name | Trichlorofluoromethane |
| Other names | Trichloro(fluoro)methane, Fluorotrichloromethane, Fluorochloroform, Freon 11, CFC 11, R 11, Arcton 9, Freon 11A, Freon 11B, Freon HE, Freon MF |
| Identifiers | |
| CAS number | 75-69-4 |
| PubChem | |
| EINECS number | |
| RTECS number | TB6125000 |
| SMILES |
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| InChI |
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| Properties | |
| Molecular formula | CCl3F |
| Molar mass | 137.37 g/mol |
| Appearance | Colorless liquid/gas |
| Density | 1.494 g/cm3 |
| Melting point |
-110.48 °C |
| Boiling point |
23.77 °C |
| Solubility in water | 1.1 g/l at 20 °C |
| log P | 2.53 |
| Vapor pressure | 89 kPa at 20 °C
131 kPa at 30 °C |
| Hazards | |
| Main hazards | Harmful (Xn), Dangerous for the environment (N) |
| R-phrases | R36/37/38 |
| S-phrases | S23, S26, S36 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references |
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Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon. It is a colorless, nearly odorless liquid that boils at about room temperature.
It was the first widely used refrigerant. Because of its high boiling point (compared to most refrigerants), it can be used in systems with a low operating pressure, making the mechanical design of such systems less demanding than that of higher-pressure refrigerants R-12 or R-22.
Because of the high chlorine content and the ease with which the chlorine atoms can be displaced when the molecule is subject to ultraviolet light, R-11 has the highest ozone depletion potential of any refrigerant, by definition assigned the value 1.0. U.S. production was ended in 1995.
Trichlorofluoromethane is used as a reference compound for fluorine-19 NMR studies.
| Property | Value |
|---|---|
| Density (ρ) at 0 °C | 1.5432 g.cm-3 |
| Density (ρ) at 18.82 °C | 1.4905 g.cm-3 |
| Critical temperature (Tc) | 198 °C (471 K) |
| Critical pressure (pc) | 4.410 MPa (44.1 bar) |
| Critical density (ρc) | 4.151 mol.l-1 |
| Refractive index (n) at 20 °C, D | 1.3821 |
| Acentric factor (ω) | 0.18875 |
| Dipole moment | 0.450 D |
| Ozone depletion potential (ODP) | 1 (by definition) |
| Global warming potential (GWP) | 4600 (CO2 = 1) |
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