Alumina is the raw material for obtaining aluminium. It is made of aluminium oxide (Al₂O₃), which is obtained from bauxite in a 2 to 1 ratio by weight. It has a melting point of approximately 2050°C.

Alumina, depending on its chemical quality, has multiple uses in the non-aluminium industry, due to its molecular characteristics, being non-combustible and not reacting with any element. By virtue of these properties, it constitutes one of the main components of the substance used in fire extinguishers, as well as in paints, increasing their fire resistance capacity. The oil industry requires alumina as a catalyst in its refining processes.

In the spark plugs of gasoline-powered combustion engines, mainly in motor vehicles, alumina acts as an insulating material, and is also used in the ceramics industry.

As for domestic uses, it is contained in toothpaste, acting as an abrasive to ensure better dental cleaning.

Likewise, alumina hydrate is used by some companies to purify water.