Overview Spherical Al Oxide Powder Alumina is an inorganic substance with the chemical formula Al2O3.It is a high-hardness compound and is also called bauxite in mining,ceramics and materials science.It is a white solid insoluble in water,odorless,tasteless,and very hard in nature.It is easy to absorb moisture but does not deliquescence (non-hygroscopic after burning).Alumina is a typical…