Dibromodifluoromethane

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 Y
PubChem	6382
ChemSpider	6142 Y
EC number	200-885-5
ChEMBL	CHEMBL499553 Y
RTECS number	PA7525000
Jmol-3D images	Image 1
SMILES C(F)(F)(Br)Br
InChI InChI=1S/CBr2F2/c2-1(3,4)5 Y Key: AZSZCFSOHXEJQE-UHFFFAOYSA-N Y 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
S-phrases	S23, S24/25
Main hazards	Dangerous for the environment (N)
NFPA 704	0 2 0
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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