Helium-3

CAS Registry Number®

14762-55-1

CAS Name

Helium-3

Molecular Formula

He

Molecular Mass

3.02

Cite this Page

Helium-3.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=14762-55-1 (retrieved 2025-03-29) (CAS RN: 14762-55-1).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    -269.955 °C

  • Density (2)

    0.081 g/cm³ (liquid)

Source(s)

Other Names and Identifiers

InChI

InChI=1S/He/i1-1

InChIKey

InChIKey=SWQJXJOGLNCZEY-BJUDXGSMSA-N

SMILES

[3He]

Canonical SMILES

[He]

Other Names for this Substance

  • Helium, isotope of mass 3
  • Helium-3
  • 3He
  • He 3

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