Tantalum

CAS Registry Number®

7440-25-7

CAS Name

Tantalum

Molecular Formula

Ta

Molecular Mass

180.95

Cite this Page

Tantalum.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=7440-25-7 (retrieved 2025-07-18) (CAS RN: 7440-25-7).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    5429 °C

  • Melting Point (1)

    2996 °C

  • Density (2)

    16.6 g/cm³

Source(s)

Other Names and Identifiers

InChI

InChI=1S/Ta

InChIKey

InChIKey=GUVRBAGPIYLISA-UHFFFAOYSA-N

SMILES

[Ta]

Canonical SMILES

[Ta]

Other Names for this Substance

  • Tantalum
  • Tantalum-181
  • JIS H4701 TaH
  • JIS TaH
  • C 606

View All

Deleted or Replaced CAS Registry Numbers

1926138-08-0, 2933217-02-6