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Characteristic
Aluminium oxide, chemical formula Al2O3. Is a high hardness compound, ionized at high temperature ionic crystals, often used in the manufacture of refractories. Alumina has many paramorph, There
are more than 10 kinds of crystal known, mainly three crystal types, α-Al2O3,β-Al2O3,γ-Al2O3, in which the structure and properties are different.
Chemical formula:Al2O3
Molar mass:101.960 g·mol−1
Appearance:white solid
Odor:odorless
Density:3.987g/cm3
Melting point:2,072 °C (3,762 °F; 2,345 K)
Boiling point:2,977 °C (5,391 °F; 3,250 K)
Solubility in water:insoluble
Solubility:insoluble in diethyl ether practically insoluble in ethanol
log P:0.31860
Application
Used as analytical reagent, organic solvent dehydration, adsorbent, organic reaction catalyst, grinding agent, polishing agent, smelting aluminum raw materials, refractory.
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