Ethyldichloroarsine

Ethyldichloroarsine, sometimes abbreviated "ED", is an organoarsenic compound with the formula CH3CH2AsCl2. This colourless volatile liquid is a highly toxic obsolete vesicant or blister agent that was used during World War I in chemical warfare.[1] The molecule is pyramidal with the Cl-As-Cl and C-As-Cl angles approaching 90° (see image). Its toxic action is similar to lewisite.

Ethyldichloroarsine
Names
IUPAC name
Ethylarsonous dichloride
Other names
ED
Dichloroethylarsane; DICK
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.009.019
EC Number
  • 209-919-3
PubChem CID
RTECS number
  • CH3500000
UNII
UN number 1892
CompTox Dashboard (EPA)
Properties
Chemical formula
 C2H5AsCl2
Molar mass 174.8893 g/mol
Appearance Colorless, mobile liquid
Density 1.742 @ 14 deg C
Melting point -65°C
Boiling point 156°C (decomposes)
Solubility in water
 Soluble in alcohol, benzene, ether, and water
Hazards
Main hazards Highly toxic, irritant
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

References
  1. http://www.northshore.org/healthresources/encyclopedia/bioterrorism/ch018200.aspx Archived March 7, 2011, at the Wayback Machine
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