Deuterium

CAS Registry Number®

7782-39-0

CAS Name

Deuterium

Molecular Formula

D2

Molecular Mass

4.03

Cite this Page

Deuterium.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?ref=7782-39-0 (retrieved 2025-06-30) (CAS RN: 7782-39-0).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    -249.49 °C

  • Density (2)

    1.4 x 10⁻³ g/cm³ (Gas) @ Temp: -243 °C; Press: 621 Torr

Source(s)

Other Names and Identifiers

InChI

InChI=1S/H2/h1H/i1+1D

InChIKey

InChIKey=UFHFLCQGNIYNRP-VVKOMZTBSA-N

SMILES

[2H][2H]

Canonical SMILES

[H][H]

Other Names for this Substance

  • Deuterium
  • Diplogen
  • Hydrogen-2
  • Deuterium molecule
  • Hydrogen, isotope of mass 2

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CAS INSIGHTSTM
Purple and red filaments produced by electrostatic discharge inside a plasma ball.