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Lewisite

Names Preferred IUPAC name[(E)-2-Chloroethen-1-yl]arsonous dichlorideOther names Chlorovinylarsine dichloride2-Chloroethenyldichloroarsine(E)-2-Chlorovinylarsonous dichloride(E)-2-ChlorovinyldichloroarsineDichloro((E)-2-chlorovinyl)arsineIdentifiers CAS Number541-25-33D model (JSmol)Interactive imageChemSpider4522971MeSHlewisitePubChemCID5372798UNII82TOY8U2KDUN number2810 CompTox Dashboard(EPA)DTXSID301259287InChIInChI=1S/C2H2AsCl3/c4-2-1-3(5)6/h1-2H/b2-1+Key: GIKLTQKNOXNBNY-OWOJBTEDSA-NInChI=1/C2H2AsCl3/c4-2-1-3(5)6/h1-2H/b2-1+Key: GIKLTQKNOXNBNY-OWOJBTEDBFSMILESCl[As](Cl)\C=C\ClProperties Chemical formula:C2H2AsCl3Molar mass207.32g/mol Density1.89g/cm Melting point−18 °C (0 °F; 255 K) Boiling point190 °C (374 °F; 463 K) Solubility in waterReacts SolubilityEthers, hydrocarbons, THF Vapor pressure0.58mmHg (25°C) Hazards Occupational safety and health (OHS/OSH): Main hazardsFlammable, highly toxic, corrosive, vesicant NFPA 704 (fire diamond) 411Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).Yverify ( ?)

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