Molecular formula: AL2O3 Molecular weight:101.96 CAS No.： 1344-28-1 EINECS No.:215-691-6
Item Unit Value
Appearance — White Powder
Crystal — α
Purity % 99.999
D50 μm 5.0-35.0
BET m2g 3.0~8.0
Sintering Density g/cm3 —
Na,≤ ppm 2
Ca,≤ ppm 1
Si,≤ ppm 2
Cu,≤ ppm 1
Mg,≤ ppm 1
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 3.965 g/cm3, Moh’s hardness8.8, insoluble in water, acid or alkali; 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 sapphire，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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