Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium oxide. It is commonly called alumina and may also be called aloxide, aloxite, or alundum in various forms and applications. It occurs naturally in its crystalline polymorphic phase α-Al2O3 as the mineral corundum, varieties of which form the precious gemstones ruby and sapphire. Al2O3 is significant in its use to produce aluminium metal, as an abrasive owing to its hardness, and as a refractory material owing to its high melting point.[7]
^"Aluminum oxide_msds".
^Cite error: The named reference properties was invoked but never defined (see the help page).
^Patnaik, P. (2002). Handbook of Inorganic Chemicals. McGraw-Hill. ISBN 978-0-07-049439-8.
^Raymond C. Rowe; Paul J. Sheskey; Marian E. Quinn (2009). "Adipic acid". Handbook of Pharmaceutical Excipients. Pharmaceutical Press. pp. 11–12. ISBN 978-0-85369-792-3.
^ abZumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. ISBN 978-0-618-94690-7.
^ abNIOSH Pocket Guide to Chemical Hazards. "#0021". National Institute for Occupational Safety and Health (NIOSH).
^"Alumina (Aluminium Oxide) – The Different Types of Commercially Available Grades". The A to Z of Materials. 3 May 2002. Archived from the original on 10 October 2007. Retrieved 27 October 2007.
Aluminiumoxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring...
(Al2O) Aluminium(II) oxide (AlO) (aluminium monoxide) Aluminium(III) oxide (aluminiumoxide), (Al2O3), the most common form of aluminiumoxide, occurring...
Aluminium hydroxide oxide or aluminium oxyhydroxide, AlO(OH) is found as one of two well defined crystalline phases, which are also known as the minerals...
nordstrandite. Aluminium hydroxide is amphoteric, i.e., it has both basic and acidic properties. Closely related are aluminiumoxide hydroxide, AlO(OH)...
affinity towards oxygen, forming a protective layer of oxide on the surface when exposed to air. Aluminium visually resembles silver, both in its color and...
Nanosized aluminiumoxide (nanosized alumina) occurs in the form of spherical or nearly spherical nanoparticles, and in the form of oriented or undirected...
primary aluminium production. Primary aluminium is produced from aluminiumoxide which is obtained from bauxite and excludes recycled aluminium. Only countries...
melting point of aluminiumoxide is 2050°C (2323K), much higher than pure aluminium's 658°C (931K). This and the insulativity of aluminiumoxide can make welding...
Anodic aluminum oxide, anodic aluminum oxide (AAO), or anodic alumina is a self-organized form of aluminum oxide that has a honeycomb-like structure formed...
oxide layer. Aluminiumoxide is weakly bonded to the underlying aluminium; without oxide removal the adhesive joint is dramatically weakened. Oxide layers...
but not to the extent of other oxides such as aluminiumoxide on aluminium. Rust is a general name for a complex of oxides and hydroxides of iron, which...
pentoxide. Some oxides like aluminiumoxides are amphoteric. Acidic oxides are of environmental concern. Sulfur and nitrogen oxides are considered air pollutants...
Aluminium smelting is the process of extracting aluminium from its oxide, alumina, generally by the Hall-Héroult process. Alumina is extracted from the...
abrasives such as aluminiumoxide or silicon carbide. It is common to use the name of the abrasive when describing the paper, e.g. "aluminiumoxide paper", or...
Aluminiumoxide is an amphoteric oxide of aluminium with the chemical formula Al2O3. It is also commonly referred to as alumina or aloxite in the mining...
mechanically recycled to separate the residual aluminium metal from the aluminiumoxide. The mechanical process of recycling does not use any toxic chemicals...
Aluminum silicate (or aluminium silicate) is a name commonly applied to chemical compounds which are derived from aluminiumoxide, Al2O3 and silicon dioxide...
possible with gallium. Aluminium exposed to air is ordinarily protected by a molecule-thin layer of its own oxide. This aluminiumoxide layer serves as a protective...
alumina (aluminiumoxide) and was developed by Carl Josef Bayer. Bauxite, the most important ore of aluminium, contains only 30–60% aluminiumoxide (Al2O3)...
production of aluminium. Hydrated aluminium trichloride is prepared by dissolving aluminiumoxides in hydrochloric acid. Metallic aluminium also readily...
catalytic action of aluminiumoxide. The direct use of ethylene oxide accounts for only 0.05% (2004 data) of its global production. Ethylene oxide is used as a...
and NaAl11O17, once mistakenly believed to be β-alumina, a phase of aluminiumoxide. Anhydrous sodium aluminate, NaAlO2, contains a three-dimensional framework...
suffix that indicates a polyatomic anion with a central aluminium atom. Aluminiumoxide (alumina) is amphoteric: it dissolves in both bases and acids. When...
The lithium nickel cobalt aluminiumoxides (abbreviated as Li-NCA, LNCA, or NCA) are a group of mixed metal oxides. Some of them are important due to their...
the magmas are relatively deficient in alkalis relative to aluminium, and aluminiumoxide may form as the mineral corundum or may combine with magnesia...
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