Propane

CAS Registry Number®

74-98-6

CAS Name

Propane

Molecular Formula

C3H8

Molecular Mass

44.10

Cite this Page

Propane.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=74-98-6 (retrieved 2025-07-10) (CAS RN: 74-98-6).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    -42.1 °C @ Press: 800 Torr

  • Melting Point (1)

    -189.7 °C

  • Density (1)

    0.5853 g/cm³ @ Temp: -45 °C

Source(s)

  • (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)

Other Names and Identifiers

InChI

InChI=1S/C3H8/c1-3-2/h3H2,1-2H3

InChIKey

InChIKey=ATUOYWHBWRKTHZ-UHFFFAOYSA-N

SMILES

C(C)C

Canonical SMILES

CCC

Other Names for this Substance

  • Propane
  • Dimethylmethane
  • Propyl hydride
  • R 290
  • n-Propane

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CAS INSIGHTSTM
Aspergillus fungus, computer illustration. This is a toxic fungus that causes diseases in humans.