moleculefinder

Barium

Ba137.33 g/mol Calculated

The metal whose sulfate you swallow before an X-ray, because it is opaque to X-rays and passes straight through you. Element 56.

Sources and notes
  • The introductionfrom sourceMoleculeFinder curated
  • Formula and weightcomputedPubChem
  • 2D drawingcomputedPubChem structure, drawn by RDKit

Where you encounter it

A pure element or an engineered material, rather than an ingredient in a product.

Sources and notes
  • The line abovefrom sourceMoleculeFinder curatedFrom the group the molecule belongs to.

Properties and sources

Calculated by PubChem

Molecular formula
Ba
Molecular weight
137.33 g/mol

Reported Hazard label (GHS), ECHA via PubChem

Danger Flammable pictogram (GHS02), Corrosive pictogram (GHS05), Toxic pictogram (GHS06) and Irritant pictogram (GHS07); hazard statements H228, H260, H261, H301, H314, H315, H318, H319, H335

Groups it belongs to

Category
Element & material
Family
Chemical elements
Hazard classes
Flammable, Corrosive, Acutely toxic, Irritant, GHS Danger
SMILES[Ba]

PubChem CID 5355457 · Wikidata Q1112 · InChIKey DSAJWYNOEDNPEQ-UHFFFAOYSA-N · Data refreshed

How MoleculeFinder sources and labels its data

Questions
What is Barium?
The metal whose sulfate you swallow before an X-ray, because it is opaque to X-rays and passes straight through you. Element 56.
How toxic is Barium?
Its GHS hazard label carries the signal word Danger and the hazard pictograms Flammable, Corrosive, Toxic and Irritant. from source
What kind of molecule is Barium?
Barium has the formula Ba and a molecular weight of 137.33 g/mol. MoleculeFinder files it under chemical elements, in the element & material group. from sourcefrom sourcefrom sourcefrom source
Sources and notes
  • Calculated valuescomputedPubChemComputed from the structure, so no laboratory conditions apply; complexity is PubChem's own structural score.
  • Hazard labelfrom sourceECHA via PubChemThe label combines these classifications.
  • ECHAfrom sourceAttributionSource: European Chemicals Agency, echa.europa.eu.
  • Data refreshedfrom sourceMoleculeFinder2026-11-09