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Merck

288497

Barium oxide

97%

Synonym(s):

Barium monoxide

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About This Item

Linear Formula:
BaO
CAS Number:
1304-28-5
Molecular Weight:
153.33
NACRES:
NA.23
PubChem Substance ID:
24857344
UNSPSC Code:
12352303
EC Number:
215-127-9
MDL number:
MFCD00003453

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InChI key

QVQLCTNNEUAWMS-UHFFFAOYSA-N

InChI

1S/Ba.O

SMILES string

O=[Ba]

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.)

Quality Level

200

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1 of 4

This Item
1.01740554847413615
Barium oxide 97%

Sigma-Aldrich

288497

Barium oxide

Barium peroxide (anhydrous, heavy), Technipur®

Sigma-Aldrich

1.01740

Barium peroxide

Barium oxide 99.99% trace metals basis

Sigma-Aldrich

554847

Barium oxide

Barium iodide AnhydroBeads™, −10 mesh, 99.995% trace metals basis

Sigma-Aldrich

413615

Barium iodide

form

powder

form

-

form

powder

form

beads

assay

97%

assay

-

assay

99.99% trace metals basis

assay

99.995% trace metals basis

density

5.72 g/mL at 25 °C (lit.)

density

4.96 g/cm3 at 20 °C

density

5.72 g/mL at 25 °C (lit.)

density

5.15 g/mL at 25 °C (lit.)

reaction suitability

reagent type: catalyst
core: barium

reaction suitability

-

reaction suitability

reagent type: catalyst
core: barium

reaction suitability

-

impurities

1-4% adsorbed H2O/CO2

impurities

-

impurities

-

impurities

≤55.0 ppm Trace Metal Analysis

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

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
GHS06,GHS05

signalword

Danger

Hazard Classifications

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

Storage Class

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

ppe

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

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Certificates of Analysis (COA)

Lot/Batch Number
0000530898
0000530898
0000494997
0000494997
0000399173

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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
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
Hao Kong et al.
The Analyst, 136(18), 3643-3648 (2011-07-29)
Thermochemiluminescence (TCL) of organic compounds or biological substances is an interesting phenomenon and has been applied to polymer analysis and medical diagnostics. We improve traditional TCL assays using the assistance of catalytic nanomaterials and construct a nanomaterials array for 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
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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