| |
| Names | |
|---|---|
| Preferred IUPAC name
Dibromo(difluoro)methane | |
| Other names
Dibromodifluoromethane | |
| Identifiers | |
| |
3D model (JSmol) |
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| ChEMBL | |
| ChemSpider |
|
| ECHA InfoCard | 100.000.805 
|
| EC Number |
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PubChem CID |
|
| RTECS number |
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| UNII | |
| UN number | 1941 |
CompTox Dashboard (EPA) |
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| |
| |
| Properties | |
| CBr2F2 | |
| Molar mass | 209.82 g/mol |
| Appearance | Colourless gas/liquid |
| Density |
|
| Melting point | −101.1 °C (−150.0 °F; 172.1 K) |
| Boiling point | 22.8 °C (73.0 °F; 295.9 K) |
| Insoluble | |
| log P | 1.99 |
| Vapor pressure | 83 kPa at 20 °C |
| Hazards | |
| GHS labelling: | |
| |
| Warning | |
| H420 | |
| P502 | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable[1] |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 100 ppm (860 mg/m3)[1] |
REL (Recommended) |
TWA 100 ppm (860 mg/m3)[1] |
IDLH (Immediate danger) |
2000 ppm[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Dibromodifluoromethane is a mixed halomethane. It is a colorless non-flammable liquid. Along with Halons 1211, 2402, and 1301, it is one of the most effective fire extinguishers, however, it is also very toxic. It is a class I ozone depleting substance (ODS).
Dibromodifluoromethane can be obtained by vapor phase bromination of difluoromethane.[2]
It is also formed during the fluorination of carbon tetrabromide.[3]
| Property | Value |
|---|---|
| Density, ρ, at 15 °C (liquid) | 2.3063 g/cm3 |
| Critical temperature, Tc | 198.3 °C, 471.3 K |
| Critical pressure, pc | 4.13 MPa, 40.8 bar |
| Refractive index, n at 20 °C, D | 1.398 |
| Dipole moment | 0.7 D |
| Ozone depletion potential, ODP | 0.4, CCl3F is 1 |
| Global warming potential, GWP | 231, CO2 is 1[4] |
{{citation}}: CS1 maint: multiple names: authors list (link)
