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]
| Names | |
|---|---|
| IUPAC name
(RS)-2-bromo-2-phenylacetonitrile | |
| Other names
α-bromobenzyl cyanide | |
| Identifiers | |
3D model (JSmol) |
|
| ChemSpider | |
| ECHA InfoCard | 100.024.863 |
PubChem CID |
|
| UNII | |
CompTox Dashboard (EPA) |
|
| |
| |
| 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] | |
| 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).
| |
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
Applications
An application for bromobenzyl cyanide is in Hoch's synthesis of diphenylacetonitrile.[7]
