High-purity Ultrafine α-Alumina

Molecular formula Al₂O₃

Molecular Weight 101.96

Chemical Name Aluminium Oxide

Einecs No. 215-691-6

Cas No. 1344-28-1

Specifications

Chemson-998MF Test Results：

                α-Al₂O₃ (SEM)                                                      Particle Size Distribution of α-Al₂O₃

Characteristics Alumina is white powder, main component of bauxite, and has different crystals. Stable crystals are α-Al₂O₃ and γ-Al₂O₃. α-Al₂O₃ is hexagonal crystal, insoluble in water, acids and alkalis, and traditionally called corundum. The melting point of α-Al₂O₃ is 2015±15℃, density 3.965g/cm³ and hardness 8.8. γ-Al₂O₃ is cubic crystal, typical amphoteric oxide, insoluble in water, but soluble in acids and alkalis.

Applications Widely used as ceramic substrate, grinding ball, flexibilizer of zirconia grinding ball, electronic packaging material, raw material of manufacturing aluminium nitride by carbothermal reduction method, filler for heat-conducting engineering plastics, precision polishing material, advanced refractory, auto sparking plug, inorganic membrane, coating or electrode material of lithium battery and biological ceramics etc. functional ceramics and structural materials.

Packaging Coextruded paper bags lined with plastic film, net weight 25Kg/bag.

Storage Store in a cool, dry, well-ventilated area away from sunlight.