B

Barium oxide

IUPAC: oxobarium

BaO Inorganic Compounds CAS 1304-28-5
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Quick Reference
Formula / NotationBaO
CAS Number1304-28-5
Molecular Weight153.33
Melting Point1923 °C
Boiling Point~2000 °C
Density5.7 g/cm³
SolubilitySolubility in water, g/100ml at 20 °C: 3.8
AppearanceBarium oxide appears as a white to yellow powder. May be toxic by ingestion. Irritates skin, eyes and mucous membranes. Used as a drying agent for gasoline and solvents.
Also Known Asoxobarium; 1304-28-5; Baryta; Barium monoxide; Calcined baryta; Barium protoxide; Barium oxide (BaO); Oxyde de baryum; DTXSID20893234; 77603K202B
CategoryInorganic Compounds

What is Barium oxide?

Barium oxide (BaO) is an inorganic compound that appears as Barium oxide appears as a white to yellow powder. May be toxic by ingestion. Irritates skin, eyes and mucous membranes. Used as a drying agent for gasoline and solvents.. It has a molecular weight of 153.33 g/mol. Its IUPAC name is oxobarium. Boiling point: ~2000 °C. Melting point: 1923 °C.

Formula & Notation

BaO

IUPAC Name: oxobarium

Other Names / Synonyms: oxobarium; 1304-28-5; Baryta; Barium monoxide; Calcined baryta; Barium protoxide; Barium oxide (BaO); Oxyde de baryum; DTXSID20893234; 77603K202B

Properties & Characteristics

Appearance: Barium oxide appears as a white to yellow powder. May be toxic by ingestion. Irritates skin, eyes and mucous membranes. Used as a drying agent for gasoline and solvents.. Molecular formula: BaO. Molecular weight: 153.33 g/mol. Boiling point: ~2000 °C. Melting point: 1923 °C. Density: 5.7 g/cm³. Solubility: Solubility in water, g/100ml at 20 °C: 3.8.

Physical Data

PropertyValue
Melting Point1923 °C
Boiling Point~2000 °C
Density5.7 g/cm³
Molecular Weight153.33
SolubilitySolubility in water, g/100ml at 20 °C: 3.8
AppearanceBarium oxide appears as a white to yellow powder. May be toxic by ingestion. Irritates skin, eyes and mucous membranes. Used as a drying agent for gasoline and solvents.

Uses & Applications

Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.

Safety Information

May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Barium oxide
Formula BaO
CAS Number 1304-28-5
Molecular Weight 153.33
Synonyms oxobarium; 1304-28-5; Baryta; Barium monoxide; Calcined baryta; Barium protoxide; Barium oxide (BaO); Oxyde de baryum; DTXSID20893234; 77603K202B

Frequently Asked Questions

Barium oxide (BaO) is an inorganic compound that appears as Barium oxide appears as a white to yellow powder. May be toxic by ingestion. Irritates skin, eyes and mucous membranes. Used as a drying agent for gasoline and solvents.. It has a molecular weight of 153.33 g/mol. Its IUPAC name is oxobarium. Boiling point: ~2000 °C. Melting point: 1923 °C.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.