Barium oxide [MI]

Base Information

• Chemical Name: Barium oxide [MI]
• CAS No.: 1304-28-5
• Molecular Formula: BaO
• Molecular Weight: 153.33
• Hs Code.: 28164000
• UNII: 77603K202B
• Mol file: 1304-28-5.mol

Synonyms:BARIUM OXIDE [MI];CSSYLTMKCUORDA-UHFFFAOYSA-N

Chemical Property of Barium oxide [MI]

Chemical Property:

• Appearance/Colour: white to cream powder
• Melting Point: 1923 °C
• Refractive Index: 1.98
• Boiling Point: ~2000 °C
• PSA: 17.07000
• Density: 5.72 g/cm³
• LogP: -0.11880
• Sensitive.: Moisture Sensitive
• Water Solubility.: Sparingly soluble in water. Soluble in ethanol, dilute mineral acids and alkali.
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 0
• Exact Mass: 153.900162
• Heavy Atom Count: 2
• Complexity: 0

Purity/Quality:

98% ^*data from raw suppliers

Barium oxide (99.5%-Ba) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): T
• Hazard Codes: T
• Statements: 20-25-34
• Safety Statements: 26-36/37/39-45

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: [O-2].[Ba+2]
• Physical properties: Barium Oxide is a white, hygroscopic formed by the burning of Ba metal in oxygen or the decomposition of the carbonate salt: 2Ba＋ O2→2BaO BaCO3→BaO＋ CO2 It transforms into the hydroxide on contact with water. BaO＋H2O→Ba(OH)2 It is soluble in ethanol, dilute acids and alkalis but insoluble in acetone and liquid ammonia. The monoxide is formed when the metal burns in air, but is usually prepared by the ignition of the nitrate, oxygen and oxides of nitrogen being liberated. It can also be obtained by the ignition of an intimate mixture of the carbonate and carbon, and in small quantities by the ignition of the iodate.
• Uses: Barium oxide is used as a coating for “hot cathodes” in a variety of electronic devices such as TV’s and lamps. It replaced lead oxide in the production of certain kinds of glass. While lead oxide raised the refractive index of the glass, it also raised the dispersion, i.e refraction of various colors of light resulting in distortion of images which barium oxide does not alter. Barium oxide also has use as an ethoxylation catalyst in the reaction of ethylene oxide and alcohols which takes place between 150 and 200°C. The thermionic emission from thin evaporated films of barium oxide has been studied extensively. Thin barium oxide films have a good emission following evaporation. The emission improves a little during heat treatment, and is then similar to that from a sprayed cathode coating of barium oxide. Barium oxide is used in cathode ray tubes, crown glass, and catalysts. It is used for the adsorption NO and NO2. It also plays an important role for NO2 storage and reduction. It acts as an efficient ethoxylation catalyst. Porous grades are marketed especially for drying gases and solvents (particularly alcohols, aldehydes and petroleum solvents). Swells, but does not become sticky upon absorption of moisture. Used in manufacture of lubricating oil detergents. Also used for making barium methoxide.