Carbon dioxide

CAS Registry Number®

124-38-9
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CAS Name

Carbon dioxide

Molecular Formula

CO2

Molecular Mass

44.01

Cite this Page

Carbon dioxide.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=124-38-9 (retrieved 2024-03-05) (CAS RN: 124-38-9).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    -78.5 °C
  • Melting Point (2)

    -56.6 °C
  • Density (3)

    1.2 x 10-3-0.2100 g/cm³

Source(s)

Other Names and Identifiers

InChI

InChI=1S/CO2/c2-1-3

InChIKey

InChIKey=CURLTUGMZLYLDI-UHFFFAOYSA-N

SMILES

C(=O)=O

Canonical SMILES

O=C=O

Other Names for this Substance

  • Carbon dioxide
  • Carbonic acid gas
  • Carbonic anhydride
  • Dry ice
  • Carbon oxide (CO2)

Deleted or Replaced CAS Registry Numbers

18923-20-1, 957761-35-2, 1053656-66-8, 1053659-60-1, 1173022-42-8, 1202865-27-7

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