Aluminium oxide

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Aluminium oxide
Names
IUPAC name
dialuminum;oxygen(2-)
Systematic IUPAC name
Aluminium oxide
Properties
Al2O3
Appearance white solid
Density 3.95–4.1 g/cm3
Melting point 2,072 °C (3,762 °F; 2,345 K)
Boiling point 2,977 °C (5,391 °F; 3,250 K)
insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Aluminium oxide is chemical compound of aluminum and oxygen with chemical formula Al2O3, its most common of several aluminium oxides. Aluminium oxide occurs naturally in it's crystalline alpha phase as mineral corundum.

Properties

Chemical

Physical

Aluminium oxide is very hard solid (9 Mohs scale). It's electrical insulator.

Availability

Aluminium oxide is often present in sandpapers, you can also buy it from mineral collectors as corrundum or gemstones like ruby or saphire.

Preparation

Aluminium oxide is a product of thermite reaction: M2O3 + 2Al → Al2O3 + 2M

Projects

Handling

No special handling is necessary.

Safety

Avoid inhalating the dust. Aluminium oxide isn't flamable or explosive.

Storage

Storage in closed bottles is adequate.

Disposal

Aluminium oxide could be safely dumped with normal trash or spilled out in a soil.

References

Relevant Sciencemadness threads