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 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL499553 ;
ChemSpider	6142 ;
ECHA InfoCard	100.000.805
EC Number	200-885-5;
PubChem CID	6382;
RTECS number	PA7525000;
UNII	82022727JD ;
UN number	1941
CompTox Dashboard (EPA)	DTXSID9058789 ;
	InChI InChI=1S/CBr2F2/c2-1(3,4)5 Key: AZSZCFSOHXEJQE-UHFFFAOYSA-N ; InChI=1/CBr2F2/c2-1(3,4)5;
	SMILES BrC(F)(F)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
GHS pictograms
GHS Signal word	Warning
GHS hazard statements	H420
GHS precautionary statements	P502
NFPA 704 (fire diamond)	0 2 0
Flash point	Non-flammable
	NIOSH (US health exposure limits):
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).

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 the most toxic one.

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

Table of physical properties

Property	Value
Density, ρ, at 15 °C (liquid)	2.3063 g/cm³
Critical temperature, T_c	198.3 °C, 471.3 K
Critical pressure, p_c	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^[2]

^ ^a ^b ^c ^d NIOSH Pocket Guide to Chemical Hazards. "#0214". National Institute for Occupational Safety and Health (NIOSH).
^ Hodnebrog, Ø., M. Etminan, J. S. Fuglestvedt, G. Marston, G. Myhre, C. J. Nielsen, K. P. Shine, and T. J. Wallington (2013), ‘Global warming potentials and radiative efficiencies of halocarbons and related compounds: A comprehensive review,’ Reviews of Geophysics, vol. 51, pp. 300-378, doi:10.1002/rog.20013.

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
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL499553
ChemSpider	6142
ECHA InfoCard	100.000.805
EC Number	200-885-5
PubChem CID	6382
RTECS number	PA7525000
UNII	82022727JD
UN number	1941
CompTox Dashboard (EPA)	DTXSID9058789
InChI InChI=1S/CBr2F2/c2-1(3,4)5 Key: AZSZCFSOHXEJQE-UHFFFAOYSA-N InChI=1/CBr2F2/c2-1(3,4)5
SMILES BrC(F)(F)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
GHS pictograms
GHS Signal word	Warning
GHS hazard statements	H420
GHS precautionary statements	P502
NFPA 704 (fire diamond)	0 2 0
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).