Bromochloromethane

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Bromochloromethane

IUPAC name	Bromochloromethane
Other names	Monochloromonobromomethane, Bromo(chloro)methane, Chloromethyl bromide, Methylene chlorobromide, Methylene bromochloride, Borothene, Halon 1011, BCM, CBM, UN 1887
Identifiers
CAS number	[74-97-5]
PubChem	6333
EINECS number	200-826-3
KEGG	C02661
ChEBI	17194
RTECS number	PA5250000
SMILES	C(Cl)Br
InChI	1/CH2BrCl/c2-1-3/h1H2
Properties
Molecular formula	CH₂BrCl
Molar mass	129.38 g/mol
Appearance	Colorless to yellow liquid with chloroform-like odor
Density	1.9344 g/cm³ at 20 °C
Melting point	-86.5 °C
Boiling point	68.1 °C
Solubility in water	16.7 g/l
Vapor pressure	15.6 kPa at 20 °C
Hazards
R-phrases	R37, R38, R41, R59
S-phrases	S26, S39, S59
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Bromochloromethane or methylene bromochloride and Halon 1011 is a mixed halomethane. It is a heavy low-viscose liquid with refractive index 1.4808.

It was used in fire extinguishers, but due to its ozone depletion potential was its production banned from the 1^st January 2002 at the Eleventh Meeting of the Parties for the Montreal Protocol on Substances that Deplete the Ozone Layer.

It can be biologically decomposed using hydrolase enzyme alkylhalidase (EC 3.8.1.1) by reaction:

CH₂BrCl + H₂O = CH₂O + Br₂ + Cl₂.

[edit] In fiction

In the Enter the Matrix video game, the player can find a "Chloro-Bromo Methane Gun", which is used as a fire extinguisher. It fires a pressurized cartridge of CBM gas to put out fires. However, due to its chemical properties, firing a cartridge near people causes their lungs to fill with liquid, effectively drowning them.