Aluminium oxide

Alumina, also known as aluminium oxide (IUPAC name), is a chemical compound with the formula Al₂O₃. It is the most common form of aluminium oxide, and is highly significant in both nature and industry. Alumina is an amphoteric substance, meaning it can react both as an acid and a base. It is typically found as the mineral corundum and its varieties, such as ruby and sapphire, which add color due to trace impurities. Alumina is used in the production of aluminium metal, as an abrasive due to its hardness, and as a refractory material due to its high melting point. The term "alumina" is derived from "aluminium," which itself comes from "alumen," the Latin name for the potassium aluminium sulfate mineral, alum. In Hebrew, alumina is translated as חלבון אלומיניום (khal'von alumini'um). Other relevant translations include aluminio óxido in Spanish, oxyde d'aluminium in French, and Aluminiumoxid in German.

Wikipedia Information

Aluminium oxide

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, ALOX or alundum in various forms and applications and alumina is refined from bauxite. It occurs naturally in its crystalline polymorphic phase α-Al2O3 as the mineral corundum, varieties of which form the precious gemstones ruby and sapphire, which have an alumina content approaching 100%. Al2O3 is used as feedstock to produce aluminium metal, as an abrasive owing to its hardness, and as a refractory material owing to its high melting point.

Last modified: 2025-11-08T23:11:14ZView full article on Wikipedia