Dibromodifluoromethane

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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 (77 °F), 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.

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 (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 = 1)

v t e Halomethanes

Monosubstituted	CH₃F CH₃Cl CH₃Br CH₃I

Disubstituted	CH₂F₂ CH₂ClF CH₂BrF CH₂FI CH₂Cl₂ CH₂BrCl CH₂ClI CH₂Br₂ CH₂BrI CH₂I₂

Trisubstituted	CHF₃ CHClF₂ CHBrF₂ CHF₂I CHCl₂F CHBrClF CHClFI CHBr₂F CHBrFI CHFI₂ CHCl₃ CHBrCl₂ CHCl₂I CHBr₂Cl CHBrClI CHClI₂ CHBr₃ CHBr₂I CHBrI₂ CHI₃

Tetrasubstituted	CF₄ CClF₃ CBrF₃ CF₃I CCl₂F₂ CBrClF₂ CClF₂I CBr₂F₂ CBrF₂I CF₂I₂ CCl₃F CBrCl₂F CCl₂FI CBr₂ClF C*BrClFI CClFI₂ CBr₃F CBr₂FI CBrFI₂ CFI₃ CCl₄ CBrCl₃ CCl₃I CBr₂Cl₂ CBrCl₂I CCl₂I₂ CBr₃Cl CBr₂ClI CBrClI₂ CClI₃ CBr₄ CBr₃I CBr₂I₂ CBrI₃ CI₄

* Chiral compound.

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