Aluminium monoxide is a chemical compound with the chemical formula Al2O. The word "aluminium" is spelled with four syllables /ˌæl.jʊˈmɪ.ni.əm/ in British English and /əˈluː.mə.nəm/ in American English. The word "monoxide" is spelled with three syllables /mɒnˈɒksaɪd/ in British English and /mɑːnˈɑːksaɪd/ in American English. The correct pronunciation of the compound is /əˈluː.mə.ni.əm mɒnˈɒksaɪd/ in British English and /əˈluː.mə.ni.əm mɑːnˈɑːksa
Aluminium monoxide, also known as aluminum oxide or alumina, is a chemical compound represented by the chemical formula Al2O3. It is a white crystalline powder that occurs naturally as corundum or bauxite in its mineral form. Aluminium monoxide is an inorganic compound primarily composed of two aluminium atoms bonded to three oxygen atoms.
In terms of physical properties, aluminium monoxide has a high melting point of approximately 2,040 °C and a boiling point of 2,700 °C. It is chemically stable and insoluble in water, but it can dissolve in mineral acids. The compound exhibits good electrical insulation characteristics.
Aluminium monoxide is widely utilized in various industries due to its exceptional properties. As a refractory material, it is employed in the production of high-temperature ceramics, crucibles, and refractory bricks used in furnace linings. It also finds use as an abrasive material for polishing, grinding, and sanding due to its hardness and durability. Moreover, aluminium monoxide is an essential component in the manufacturing of synthetic gems and gemstones.
In addition to its industrial applications, aluminium monoxide is utilized as a catalyst in chemical reactions, as a filler for plastics and rubbers, and as a component of insulation materials. It is also a key ingredient in the production of advanced ceramics, such as alumina ceramics, which possess excellent mechanical and thermal properties. Overall, aluminium monoxide plays a crucial role across various sectors, contributing to numerous industrial processes and products.
The word "aluminium monoxide" is derived from its chemical composition and naming conventions in chemistry.
1. Aluminium: The term "aluminium" originates from the Latin word "alumen", meaning "alum". This is due to the historical association of aluminium compounds with alum, a hydrated double sulfate salt. The element aluminium (symbol Al) itself was named in the early 19th century by Sir Humphry Davy, an English chemist.
2. Monoxide: The term "monoxide" comes from the Greek words "monos", meaning "single", and "oxys", meaning "oxygen". In chemistry, "monoxide" is used to indicate a compound that contains only one oxygen atom. It is added to the name of an element to represent an oxide with a 1:1 ratio of atoms.