Barium oxide

Jump to navigation Jump to search


An alkaline, white powder or mass that readily absorbs Water and Carbon dioxide from the air. Barium oxide is used as a dehydrating agent and as a glaze ingredient.

Synonyms and Related Terms

barium monoxide; barium protoxide; calcined baryta; heavy earth


  • Highly toxic by ingestion.
  • Contact with skin and membranes may cause irritation.
  • Reaction with water can be violent.
  • ThermoFisher: SDS

Physical and Chemical Properties

  • Reacts exothermically with water to form barium hydroxide.
  • Soluble in water, dilute acids and methanol.
Composition BaO
CAS 1304-28-5
Melting Point 1923 C
Density 5.7 g/ml
Molecular Weight mol. wt. = 153.33
Refractive Index 1.980

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 84
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1015
  • CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.980

Retrieved from ""