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Sigma-Aldrich

Barium oxide

97%

Synonym(s):

Barium monoxide

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About This Item

Linear Formula:
BaO
CAS Number:
Molecular Weight:
153.33
EC Number:
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
NA.23

Assay

97%

form

powder

reaction suitability

reagent type: catalyst
core: barium

impurities

1-4% adsorbed H2O/CO2

density

5.72 g/mL at 25 °C (lit.)

SMILES string

O=[Ba]

InChI

1S/Ba.O

InChI key

QVQLCTNNEUAWMS-UHFFFAOYSA-N

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General description

Barium oxide, also known as barium(II) oxide, is a white or off-white fine powder with a melting point exceeding 1,800 °C. It is a highly stable compound with a high melting point and good chemical resistance, making it suitable for use in a wide range of applications. There are several methods to produce barium oxide including the thermal decomposition of barium carbonate and the electrolysis of barium chloride.

Application

Barium oxide is used in a variety of applications. It is used as a raw material in the production of ceramics, such as glazes and ceramic pigments. It is used as a refractory material in the production of furnace linings and high-temperature applications. It is used as a fluxing agent in the production of glass, helping to lower the melting point and improve the clarity of glass. It is used as a catalyst in the production of polyethylene and other polymers. It is often used as a starting material to produce other barium compounds or dope semiconductors.

Features and Benefits

Used in the synthesis of the high-κ material BST (barium strontium titanate). Used in the study of NOX storage.

Pictograms

Skull and crossbonesCorrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Oral - Acute Tox. 4 Inhalation - Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Shunyi Li et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 23(33), 334202-334202 (2011-08-05)
The electrical properties of (Ba, Sr)TiO(3) (BST) thin films are studied using different combinations of Pt and tin-doped indium oxide (In(2)O(3):Sn, ITO) as electrode material. With Pt as bottom and top electrode the films show insulating behaviour with a low
Justin I Schwartz et al.
Acta odontologica Scandinavica, 62(2), 102-106 (2004-06-17)
Three UEDMA/TEGDMA (50:50 by weight) based dental composites were made, each with filler loadings of 53 vol.%. The three composites contained silane-treated filler particles with average particle diameters of 1.5, 3.0, or 10.0 microm. Twelve specimens per composite were mounted
Paolo Raiteri et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 23(33), 334213-334213 (2011-08-05)
A new reactive force field to describe proton diffusion within the solid oxide fuel cell material BaZrO(3) has been derived. Using a quantum mechanical potential energy surface, the parameters of an interatomic potential model to describe hydroxyl groups within both
Lei Yang et al.
Nature communications, 2, 357-357 (2011-06-23)
The existing Ni-yttria-stabilized zirconia anodes in solid oxide fuel cells (SOFCs) perform poorly in carbon-containing fuels because of coking and deactivation at desired operating temperatures. Here we report a new anode with nanostructured barium oxide/nickel (BaO/Ni) interfaces for low-cost SOFCs
Ozlem Gurbuz et al.
Gerodontology, 29(2), e710-e714 (2011-10-01)
The purpose of the study was to determine the effect of different forms and concentrations (2.5, 3, 4, 5% by volume) of glass fibres (chopped strand mat, continuous and woven) on fatigue resistance of acrylic denture base resin. The fatigue

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