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288497

Sigma-Aldrich

Barium oxide

97%

Synonyme(s) :

Barium monoxide

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About This Item

Formule linéaire :
BaO
Numéro CAS:
1304-28-5
Poids moléculaire :
153.33
Numéro CE :
215-127-9
Numéro MDL:
MFCD00003453
Code UNSPSC :
12352303
ID de substance PubChem :
24857344
Nomenclature NACRES :
NA.23

Niveau de qualité

200

Pureté

97%

Forme

powder

Pertinence de la réaction

reagent type: catalyst
core: barium

Impuretés

1-4% adsorbed H2O/CO2

Densité

5.72 g/mL at 25 °C (lit.)

Chaîne SMILES 

O=[Ba]

InChI

1S/Ba.O

Clé InChI

QVQLCTNNEUAWMS-UHFFFAOYSA-N

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Description générale

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.

Caractéristiques et avantages

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

Pictogrammes

Skull and crossbonesCorrosion
GHS06,GHS05

Mention d'avertissement

Danger

Mentions de danger

H301,H314,H332

Classification des risques

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

Code de la classe de stockage

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

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificats d'analyse (COA)

Lot/Batch Number
0000399173
0000364667
0000364668
0000310219
0000364668

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Sonia Kudłacik-Kramarczyk et al.
Materials (Basel, Switzerland), 13(15) (2020-07-29)
Barium titanate is a ferroelectric perovskite with unique electric properties; therefore, it is widely applied in the fabrication of inorganic coatings or thin films, capacitors, or in the production of devices for energy storage and conversion. This paper describes the
D J Harris et al.
Physical chemistry chemical physics : PCCP, 7(8), 1839-1844 (2005-04-21)
We have modelled the surface diffusion and growth of BaO and SrO both in the homoepitaxial and heteroepitaxial (BaO on SrO and SrO on BaO) cases. The diffusion proceeds most favourably by an exchange mechanism involving the surface layer. When
Kumudu Mudiyanselage et al.
Langmuir : the ACS journal of surfaces and colloids, 25(18), 10820-10828 (2009-07-11)
Reactions of NO2, H2O, and CO2 with a thick (>20 monolayer equivalent (MLE)) BaO film supported on Pt(111) were studied with temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS). NO2 reacts with a thick BaO layer to form surface
Emine Göncü Başaran et al.
The Journal of prosthetic dentistry, 109(2), 88-94 (2013-02-12)
It is unclear if fiber-reinforced fixed dental prostheses can be fabricated with physical properties that make them suitable for definitive prostheses. The purpose of this study was to compare the load bearing capacity of fiber-reinforced and unreinforced computer-aided design/computer-aided manufacturing
Janós Szanyi et al.
The journal of physical chemistry. B, 109(1), 27-29 (2006-07-21)
Temperature programmed desorption, infrared spectroscopy, and (15)N solid state NMR spectroscopy were used to characterize the nature of the nitrate species formed on Al(2)O(3) and BaO/Al(2)O(3) NO(x) storage/reduction materials. Two distinctly different nitrate species were found: surface nitrates that are
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