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Substance Name: Barium
RN: 7440-39-3
UNII: 24GP945V5T
InChIKey: DSAJWYNOEDNPEQ-UHFFFAOYSA-N

Note

  • 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.

Molecular Formula

  • Ba

Molecular Weight

  • 137.33
 

Classification Codes

  • 2007 CERCLA Priority List, Rank: 109
  • 2011 CERCLA Priority List, Rank: 126
  • TWA 0.5 mg/m3 as Ba
  • TWA 0.5 mg/m3; Not classifiable as a human carcinogen

Names and Synonyms

Name of Substance

  • Barium

MeSH Heading

  • Barium

Synonyms

  • Bario
  • Bario [Spanish]
  • Barium
  • Barium, elemental
  • Baryum
  • Baryum [French]
  • EINECS 231-149-1
  • HSDB 4481
  • UNII-24GP945V5T

Systematic Name

  • Barium

Superlist Names

  • Barium
  • Barium and soluble compounds
  • Barium [UN1400] [Dangerous when wet]
  • Barium, soluble compounds
  • Barium, water-soluble compounds, n.o.s.
  • UN1400

Registry Numbers

CAS Registry Number

  • 7440-39-3

FDA UNII

  • 24GP945V5T

System Generated Number

  • 0007440393

Structure Descriptors

InChI

1S/Ba

InChIKey

DSAJWYNOEDNPEQ-UHFFFAOYSA-N

Smiles

[Ba]