Bromobenzyl cyanide

Phased out persisting lachrymatory agent From Wikipedia, the free encyclopedia

Bromobenzyl cyanide (BBC), also known in the military idiom as camite, is an obsolete lachrymatory agent[2] introduced in World War I by the Allied Powers, being a standard agent, along with chloroacetophenone, adopted by the Chemical Warfare Service.[3] It was thought to have been phased out in the 1930s, but has allegedly seen use in 2024, when authorities in the Republic of Georgia are said to have used it to quell anti-government protests. [4]

Quick facts Names, Identifiers ...
Bromobenzyl cyanide
Names
IUPAC name
(RS)-2-bromo-2-phenylacetonitrile
Other names
α-bromobenzyl cyanide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.024.863 Edit this at Wikidata
UNII
  • InChI=1S/C8H6BrN/c9-8(6-10)7-4-2-1-3-5-7/h1-5,8H ☒N
    Key: XUHFBOUSHUEAQZ-UHFFFAOYSA-N ☒N
  • InChI=1/C8H6BrN/c9-8(6-10)7-4-2-1-3-5-7/h1-5,8H
    Key: XUHFBOUSHUEAQZ-UHFFFAOYAJ
  • C1=CC=C(C=C1)C(C#N)Br
Properties
C8H6BrN
Molar mass 196.04 g mol−1
Appearance Pale yellow crystals
Odor odor of soured fruit
Density 1.539 g/cm3
Melting point 29 °C (84 °F; 302 K)
Boiling point 242 °C (468 °F; 515 K)
slightly soluble
Solubility freely soluble in alcohol, ether, acetone, and chloroform
soluble in phosgene, chloropicrin and benzyl cyanide
Vapor pressure 0.012 mmHg (20 °C)
Hazards
GHS labelling:[1]
GHS07: Exclamation mark
Warning
H302, H315, H319, H335
P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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When implemented in World War I, it revolutionized the use of tear agents due to its extreme potency and great persistence.[5] Bromobenzyl cyanide has been described as too toxic for use as a non-lethal crowd control agent.[6]

Use against protestors in 2024

Despite it being described as obsolete, Georgian authorities appeared to have used camite in November 2024 against civil protestors in Tbilisi, adding it to the water in a water cannon aimed at the people, according to a BBC News investigation.[4]

Applications

An application for bromobenzyl cyanide is in Hoch's synthesis of diphenylacetonitrile.[7]

See also

References

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