Arsenic

CAS Registry Number®

7440-38-2

CAS Name

Arsenic

Molecular Formula

As

Molecular Mass

74.92

Cite this Page

Arsenic.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=7440-38-2 (retrieved 2025-05-13) (CAS RN: 7440-38-2).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    615 °C

  • Melting Point (2)

    613 °C (sublm)

  • Density (3)

    5.778 g/cm³ @ Temp: 25 °C

Source(s)

  • (1) PhysProp data were obtained from Syracuse Research Corporation of Syracuse, New York (US)
  • (2) International Chemical Safety Cards data were obtained from the National Institute for Occupational Safety and Health (US)
  • (3) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)

Other Names and Identifiers

InChI

InChI=1S/As

InChIKey

InChIKey=RQNWIZPPADIBDY-UHFFFAOYSA-N

SMILES

[As]

Canonical SMILES

[As]

Other Names for this Substance

  • Arsenic
  • Arsenic-75
  • Arsenic black
  • MeSH ID: D001151

Deleted or Replaced CAS Registry Numbers

39277-51-5, 55624-62-9

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