Barium sulfate

CAS Registry Number®

7727-43-7

CAS Name

Barium sulfate

Molecular Formula

Ba.H2O4S

Molecular Mass

235.41

Cite this Page

Barium sulfate.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=7727-43-7 (retrieved 2025-07-18) (CAS RN: 7727-43-7).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    1580 °C

  • Density (1)

    4.49 g/cm³

Source(s)

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

Other Names and Identifiers

InChI

InChI=1S/Ba.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)

InChIKey

InChIKey=XUBKPYAWPSXPDZ-UHFFFAOYSA-N

SMILES

S(=O)(=O)(O)O.[Ba]

Canonical SMILES

[Ba].O=S(=O)(O)O

Other Names for this Substance

  • Sulfuric acid, barium salt (1:1)
  • C.I. 77120
  • Bakontal
  • Baridol
  • Barium sulfate

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Deleted or Replaced CAS Registry Numbers

8054-35-1, 12751-32-5, 1314087-22-3, 1352053-72-5, 1400694-37-2, 2095567-47-6