Chinese name alumina aluminium oxide alumina Chemical formula Al Molecular weight 101.96 CAS login number 1344-28-1 EINECS entry number 215-691-6 Melting point 2054�ºC Boiling point 2980 â?? Water soluble insoluble in water, soluble in strong alkali and acid Density 3.5g /cm�³ White amorphous powder on the outside It should be used as analytical reagent, adsorbent, etc Alumina is a stable oxide of aluminum, the chemical formula is Al2O3. It is also known as bauxite in mining, ceramics and materials science. Properties: white solid insoluble in water, odorless, tasteless, extremely hard, easy to absorb moisture without deliquination (burned without hygroscopic). Alumina is a typical amphoteric oxide (corundum is �±-shaped and belongs to the most dense hexagonal packing, is an inert compound, slightly soluble in acid and alkali corrosion resistance [1]), soluble in inorganic acid and alkaline solutions, almost insoluble in water and non-polar organic solvents; Relative density ( Storage: Keep sealed and dry. Uses: Used as analytical reagent, dehydration of organic solvent, adsorbent, organic reaction catalyst, abrasive, polishing agent, raw material for smelting aluminum, refractory