1.01095
Aluminum oxide
(anhydrous (γ-aluminia)), Technipur®
Synonym(s):
Alumina
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About This Item
Linear Formula:
Al2O3
CAS Number:
Molecular Weight:
101.96
MDL number:
UNSPSC Code:
12352311
NACRES:
NA.21
Quality Level
pH
5 (100 °C, 50 g/L in H2O, suspension)
bp
>2980 °C/1013 hPa
mp
2040 °C (lit.)
SMILES string
O=[Al]O[Al]=O
InChI
1S/2Al.3O
InChI key
TWNQGVIAIRXVLR-UHFFFAOYSA-N
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General description
Aluminum oxide is an amphoteric oxide of aluminum. It is also known as alumina. It is widely used in abrasives, refractories, electronics, heat-resistant fibers, ceramics, and glass industries due to its wide availability, high thermal stability, and melting point as well as excellent strength and hardness. Alumina distinguishes itself from many composite materials due to its outstanding mechanical, chemical, and thermal properties.
Application
Aluminum oxide (Al2O3) is widely used as an electrical insulator because of its high ionic inter-atomic bonds, excellent thermal resistive properties, and chemical stability. In electronic and microelectronic applications, Al2O3 is used as a substrate for integrated circuits, as well as high-temperature and corrosive-resistant coating materials. Being a dielectric material,Al2O3 possesses a high breakdown strength (300–700 MV m-1) and relatively large bandgap (∼ 9Ev). Therefore it is a potential candidate for use in dielectric capacitors. It is also used in spark plug insulators, micro-electric substrates, and insulating heatsinks.
In plastic and rubber industries, modified Al2O3 is used as a reinforcing filler to improve the rheological and mechanical properties of the composites.
In plastic and rubber industries, modified Al2O3 is used as a reinforcing filler to improve the rheological and mechanical properties of the composites.
Legal Information
Technipur is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
13 - Non Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Information
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Enhancement of properties of red iron oxide ? aluminium oxide solid solutions anticorrosive pigments
Ahmed NM and Selim MM
Pigment & Resin Technology, 34(5), 256-264 (2005)
Ruys AJ
Alumina Ceramics: Biomedical and Clinical Applications (2019)
Element and Processing
Soo-Jin Park S-J & Seo M-K
Interface Science and Technology , 18, 431-499 (2011)
Human health risk assessment for aluminium, aluminium oxide, and aluminium hydroxide
Krewski D, et al.
Journal of Toxicology and Environmental Health. Part B, Critical Reviews, 10(Suppl 1), 1-269 null
A novel and simple aluminium/sol?gel-derived amorphous aluminium oxide multilayer film with high energy density
Su Z, et al.
Journal of Material Chemistry C, 6, 5616-5623 (2018)
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