Alumina is a stable oxide of aluminum and its chemical formula is Al2O3. It is also called bauxite in mining, ceramics and materials science.
Properties: White solid insoluble in water, odorless, tasteless, extremely hard, easy to absorb moisture but not deliquescent (non-hygroscopic after burning). Alumina is a typical amphoteric oxide, (corundum is alpha-shaped and belongs to the hexagonal most densely packed, it is an inert compound, slightly soluble in acid and alkali and corrosion resistant[1]), soluble in inorganic acid and alkaline solution, almost insoluble Water and non-polar organic solvent; relative density (d204) 4.0; melting point 2050℃.
Storage: sealed and dry storage.
Uses: used as analytical reagents, dehydration of organic solvents, adsorbents, organic reaction catalysts, abrasives, polishing agents, raw materials for smelting aluminum, and refractory materials.