Lewisite 2

CAS Registry Number®

40334-69-8

CAS Name

Lewisite 2

Molecular Formula

C4H4AsCl3

Molecular Mass

233.36

Cite this Page

Lewisite 2.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=40334-69-8 (retrieved 2025-04-02) (CAS RN: 40334-69-8).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    35-107 °C @ Press: 4 Torr

  • Melting Point (2)

    0.1 °C

  • Density (2)

    1.8754 g/cm³ @ Temp: 26.1 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C4H4AsCl3/c6-3-1-5(8)2-4-7/h1-4H

InChIKey

InChIKey=YRFJGLQNTWLXKO-UHFFFAOYSA-N

SMILES

[As](C=CCl)(C=CCl)Cl

Canonical SMILES

ClC=C[As](Cl)C=CCl

Other Names for this Substance

  • Arsinous chloride, As,As-bis(2-chloroethenyl)-
  • Arsinous chloride, bis(2-chloroethenyl)-
  • Arsine, chlorobis(2-chlorovinyl)-
  • As,As-Bis(2-chloroethenyl)arsinous chloride
  • Lewisite II

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