Molecular formula: AL2O3 Molecular weight：101.96 CAS No.： 1318-28-1 EINECS No.:215-691-6
Item Unit Value
Appearance — White Fine Particles
Crystal — γ
Aluminum oxide content % ≥99.5
d50 μm 1.0-3.0
D50 μm 50-150
BET m2g 3.0~8.0
Green Density g/cm3 ≥2.2
Density g/cm3 ≥3.88
Shrinkage rate % 16.5±0.5
Firing Temperature oC 1630
Na2O % ≤0.03
Fe2O3 % ≤0.02
Properties
Alumina chemical formula Al2O3, is the main element of the bauxite; White powder, with different crystal type, common is alpha-Al2O3 and gamma-Al2O3;Alpha-Al2O3 six-party close packing of crystal, commonly known as corundum, its melting point 2045 ℃, the density 3.98 g/cm3, Moh’s hardness 9.0, insoluble in water, slightly soluble in strong acids or bases; Gamma Al2O3 cubic close packing of crystal, insoluble in water, but soluble in acid and alkali, is typical of both sexes oxide.
Usage
Use for bulletproof sheet，lithium battery diaphragm coated and electrode materials, precision polishing materials, alumina ceramic substrate, high purity alumina grinding ball, zirconium oxide grinding ball flexibilizer, electronic packaging materials, carbon reduction method in the production of aluminum nitride materials, thermal engineering plastic packing, senior refractories, spark plugs, inorganic membranes and biological functions such as ceramics and structure of ceramic materials.
Packing
The outer packing nylon bags, lined with aluminum foil bag, net weight 25 kg/bag.
Storage
Sealed store in a cool, dry place, prevent to be affected with damp.
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