Lewisite

Lewisite^[1]
Names
	Preferred IUPAC name [(E)-2-Chloroethen-1-yl]arsonous dichloride
	Other names Chlorovinylarsine dichloride; 2-Chloroethenyldichloroarsine; (E)-2-Chlorovinylarsonous dichloride; (E)-2-Chlorovinyldichloroarsine; Dichloro((E)-2-chlorovinyl)arsine
Identifiers
CAS Number	541-25-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	4522971 ;
MeSH	lewisite
PubChem CID	5372798;
UNII	82TOY8U2KD ;
UN number	2810
	InChI InChI=1S/C2H2AsCl3/c4-2-1-3(5)6/h1-2H/b2-1+ Key: GIKLTQKNOXNBNY-OWOJBTEDSA-N ; InChI=1/C2H2AsCl3/c4-2-1-3(5)6/h1-2H/b2-1+ Key: GIKLTQKNOXNBNY-OWOJBTEDBF;
	SMILES Cl[As](Cl)\C=C\Cl;
Properties
Chemical formula	C2H2AsCl3
Molar mass	207.32 g/mol
Density	1.89 g/cm3
Melting point	−18 °C (0 °F; 255 K)
Boiling point	190 °C (374 °F; 463 K)
Solubility in water	Reacts with water
Solubility	Ethers, hydrocarbons, THF
Vapor pressure	0.58 mmHg (25 °C)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Flammable, highly toxic, corrosive, vesicant
NFPA 704 (fire diamond)	4 1 1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Lewisite (L) (A-243) is an organoarsenic compound. It was once manufactured in the U.S., Japan, Germany^[2] and the Soviet Union^[3] for use as a chemical weapon, acting as a vesicant (blister agent) and lung irritant. Although the substance is colorless and odorless in its pure form, impure samples of lewisite are a yellow, brown, violet-black, green, or amber oily liquid with a distinctive odor that has been described as similar to geraniums.^[4]^[5]^[6]

Apart from its use as a weapon of war, lewisite is useless; a chemist from the United States Army's chemical warfare laboratories said that "no one has ever found any use for the compound".^[7]

^ Lewisite I – Compound Summary, PubChem.
^ Mitchell, Jon (27 July 2013). "A drop in the ocean: the sea-dumping of chemical weapons in Okinawa" – via Japan Times Online.
^ "Russia Completes Destruction of First 10 Tons of Lewisite – Analysis – NTI". www.nti.org.
^ Cite error: The named reference nrc was invoked but never defined (see the help page).
^ "CDC – The Emergency Response Safety and Health Database: Blister Agent: Lewsite (L) – NIOSH". www.cdc.gov. Retrieved 2016-01-14.
^ Goldman, Max; Dacre, Jack C. (February 14, 1989). Ware, George W. (ed.). "Reviews of Environmental Contamination and Toxicology: Continuation of Residue Reviews". Reviews of Environmental Contamination and Toxicology. 110. Springer: 75–115. doi:10.1007/978-1-4684-7092-5_2. PMID 2692088 – via Springer Link.
^ Metal-Organic Compounds. Advances in Chemistry. Vol. 23. American Chemical Society. January 1, 1959. doi:10.1021/ba-1959-0023.ch031.

[1] Lewisite I – Compound Summary, PubChem.

[2] Mitchell, Jon (27 July 2013). "A drop in the ocean: the sea-dumping of chemical weapons in Okinawa" – via Japan Times Online.

[3] "Russia Completes Destruction of First 10 Tons of Lewisite – Analysis – NTI". www.nti.org.

[nrc-4] Cite error: The named reference nrc was invoked but never defined (see the help page).

[:0-5] "CDC – The Emergency Response Safety and Health Database: Blister Agent: Lewsite (L) – NIOSH". www.cdc.gov. Retrieved 2016-01-14.

[lewisitechem-6] Goldman, Max; Dacre, Jack C. (February 14, 1989). Ware, George W. (ed.). "Reviews of Environmental Contamination and Toxicology: Continuation of Residue Reviews". Reviews of Environmental Contamination and Toxicology. 110. Springer: 75–115. doi:10.1007/978-1-4684-7092-5_2. PMID 2692088 – via Springer Link.

[whatisitgoodfor-7] Metal-Organic Compounds. Advances in Chemistry. Vol. 23. American Chemical Society. January 1, 1959. doi:10.1021/ba-1959-0023.ch031.

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