Dibromodifluoromethane

Dibromodifluoromethane

Names
Preferred IUPAC name Dibromo(difluoro)methane
Other names Dibromodifluoromethane Difluorodibromomethane Carbon dibromide difluoride Carbon bromide fluoride Halon 1202 Fluorocarbon 12-B2 FC 12-B2 R 12B2 UN 1941 Freon 12B2
Identifiers
CAS Number	75-61-6 Y
3D model (JSmol)	Interactive image
ChemSpider	6142 Y
ECHA InfoCard	100.000.805
EC Number	200-885-5
PubChem CID	6382
RTECS number	PA7525000
InChI InChI=1S/CBr2F2/c2-1(3,4)5 Y Key: AZSZCFSOHXEJQE-UHFFFAOYSA-N Y InChI=1/CBr2F2/c2-1(3,4)5
SMILES C(F)(F)(Br)Br
Properties
Chemical 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 (−150.0 °F; 172.1 K)
Boiling point	22.8 °C (73.0 °F; 295.9 K)
Solubility in water	Insoluble
log P	1.99
Vapor pressure	83 kPa at 20 °C
Hazards
Main hazards	Dangerous for the environment (N)
S-phrases (outdated)	S23, S24/25
NFPA 704	0 2 0
Flash point	nonflammable
US health exposure limits (NIOSH):
PEL (Permissible)	TWA 100 ppm (860 mg/m3)
REL (Recommended)	TWA 100 ppm (860 mg/m3)
IDLH (Immediate danger)	2000 ppm
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

2.27 g/cm³ (for liquid)

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.

It is a class I ozone depleting substance (ODS).