Chemicals and Drugs

Barium

An element of the alkaline earth group of metals. It has an atomic symbol Ba, atomic number 56, and atomic weight 138. All of its acid-soluble salts are poisonous.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

An element of the alkaline earth group of metals. It has an atomic symbol Ba, atomic number 56, and atomic weight 138. All of its acid-soluble salts are poisonous.

Chemical Identity

Chemical Information

Molecular Formula
Ba
Molecular Weight
137.33 g/mol
CAS Registry No.
7440-39-3
IUPAC Name
barium
InChIKey
DSAJWYNOEDNPEQ-UHFFFAOYSA-N
SMILES
[Ba]
MeSH Unique ID
D001464
Source
PubChem CID 5355457

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

See Also

MeSH Record

Aspects Covered

24 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, blood, cerebrospinal fluid, chemistry, classification, deficiency, economics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, urine.

MeSH Hierarchy

Tree Numbers

  1. D01w.268w.552w.050w
  2. D01w.268w.556w.062w
  3. D01w.552w.539w.124w
  4. D01w.552w.544w.062w

AMA Style

References

  1. National Library of Medicine. Barium. Medical Subject Headings (MeSH). 2026. Unique ID D001464. http://id.nlm.nih.gov/mesh/2026/D001464
  2. Barium. In: Wikipedia. https://en.wikipedia.org/wiki/Barium
  3. Barium. In: Wikidata. https://www.wikidata.org/wiki/Q1112
  4. Barium. In: PubChem Compound. CID 5355457. https://pubchem.ncbi.nlm.nih.gov/compound/5355457