| Customization: | Available |
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| CAS No.: | 1344-28-1 |
| Formula: | Al2O3 |
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Alumina is an inorganic substance with the chemical formula Al2O3, a high hardness compound with a melting point of 2054°C and a boiling point of 2980°C. Ionized crystals that can be ionized at high temperatures are commonly used in the manufacture of refractory materials.
Industrial alumina is prepared from bauxite (Al2O3-3H2O) and hard alumina, for the high purity requirements of Al2O3, generally prepared by chemical methods.Al2O3 has many homogeneous heterocrystals, known to be more than 10 kinds of, there are mainly three kinds of crystal type, namely, α-Al2O3, β-Al2O3, γ-Al2O3, which has different structure and different properties, in 1300 ºC, almost completely converted to α-Al2O3 at high temperatures above 1300 ºC. At high temperatures above 1300°C, it is almost completely transformed into α-Al2O3.4
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