Dibromodifluoromethane
From Wikipedia, the free encyclopedia
| Dibromodifluoromethane | |
|---|---|
 |
|
| IUPAC name | Dibromodifluoromethane |
| Other names | Difluorodibromomethane, Carbon dibromide difluoride, Carbon bromide fluoride, Halon 1202, Fluorocarbon 12-B2, FC 12-B2, R 12B2, UN 1941 |
| Identifiers | |
| CAS number | [75-61-6] |
| PubChem | |
| EINECS number | |
| RTECS number | PA7525000 |
| SMILES | C(F)(F)(Br)Br |
| InChI | 1/CBr2F2/c2-1(3,4)5 |
| 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 | |
| Main hazards | Dangerous for the environment (N) |
| NFPA 704 |
 0
2
0
|
| S-phrases | S23, S24/25 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
|
Dibromodifluoromethane is a mixed halomethane. It is a colorless non-flammable liquid.
Among halons 1211, 2402 and 1301 it is the most effective fire extinguishers, however, also the most toxic one.
It is a class I ozone depleting substance (ODS).
[edit] 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) |
[edit] See also
- Haloalkane
- Halomethane
- Tetrafluoromethane
- Bromotrifluoromethane
- Tribromofluoromethane
- Tetrabromomethane
