Diphenylchlorarsine

Diphenylchlorarsine
Names
	Preferred IUPAC name Diphenylarsinous chloride
	Other names diphenylchlorarsine, diphenylchloroarsenic, chlorodiphenylarsane, sneezing gas
Identifiers
CAS Number	712-48-1 ;
3D model (JSmol)	Interactive image; Interactive image;
Abbreviations	Ph2AsCl
ChemSpider	12306 ;
ECHA InfoCard	100.010.839
PubChem CID	12836;
UNII	1H39V3559B ;
CompTox Dashboard (EPA)	DTXSID30858733 ;
	InChI InChI=1S/C12H10AsCl/c14-13(11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10H Key: YHHKGKCOLGRKKB-UHFFFAOYSA-N ; InChI=1/C12H10AsCl/c14-13(11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10H Key: YHHKGKCOLGRKKB-UHFFFAOYAA;
	SMILES Cl[As](C1=CC=CC=C1)C2=CC=CC=C2; Cl[As](c1ccccc1)c2ccccc2;
Properties
Chemical formula	C12H10AsCl
Molar mass	264.59 g mol−1
Appearance	colorless crystalline solid
Density	1.55 g/cm3
Melting point	42 °C (108 °F; 315 K)
Boiling point	307.2 °C (585.0 °F; 580.3 K)
Magnetic susceptibility (χ)	-145.5·10−6 cm3/mol
	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

Diphenylchloroarsine (DA) is the organoarsenic compound with the formula (C₆H₅)₂AsCl. It is highly toxic and was once used in chemical warfare. It is also an intermediate in the preparation of other organoarsenic compounds. The molecule consists of a pyramidal As(III) center attached to two phenyl rings and one chloride. It was also known as sneezing oil during World War I by the Allies.