Dibromodifluoromethane
| Dibromodifluoromethane | |
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Dibromodifluoromethane |
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Other names
Difluorodibromomethane, Carbon dibromide difluoride, Carbon bromide fluoride, Halon 1202, Fluorocarbon 12-B2, FC 12-B2, R 12B2, UN 1941 |
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| Identifiers | |
| CAS number | 75-61-6  |
| PubChem | 6382 |
| ChemSpider | 6142 |
| EC number | 200-885-5 |
| ChEMBL | CHEMBL499553 |
| RTECS number | PA7525000 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | CBr2F2 |
| Molar mass | 209.82 g/mol |
| Appearance | Colourless gas/liquid |
| Density | 8.7 kg/m³ (for gas)
2.27 g/cm³ (for liquid) |
| Melting point |
-101.1°C |
| Boiling point |
22.8 °C |
| Solubility in water | Insoluble |
| log P | 1.99 |
| Vapor pressure | 83 kPa at 20 °C |
| Hazards | |
| S-phrases | S23, S24/25 |
| Main hazards | Dangerous for the environment (N) |
| NFPA 704 |
 0
2
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 | |
Dibromodifluoromethane is a mixed halomethane. It is a colorless non-flammable liquid.
Along with Halons 1211, 2402, and 1301, it is the most effective fire extinguishers, however, also the most toxic one.[clarification needed]
It is a class I ozone depleting substance (ODS).
Table of physical properties
| Property | Value |
|---|---|
| Density (ρ) at 15 °C (liquid) | 2.3063 g.cm−3 |
| 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 = 1) |
External links
- International Chemical Safety Card 1419
- NIOSH Pocket Guide to Chemical Hazards 0214
- Photolysis of dibromodifluoromethane at 265 nm
- Raman and infrared spectra of solid dibromodifluoromethane
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