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Aluminium carbonate

|Section2={{Chembox Properties | Formula = Al2(CO3)3 | Appearance = | Density = | MeltingPt = | BoilingPt = | Solubility = }} |Section3={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} }} Aluminium carbonate (Al2(CO3)3), is a carbonate of aluminium. It is not well characterized; one authority says that simple carbonates of aluminium, gallium and indium are not known.Anthony John Downs, (1993), Chemistry of Aluminium, Gallium, Indium, and Thallium, Springer, Basic aluminium carbonate, the mineral dawsonite, is a known compound.

Preparation

There is no evidence that aluminium carbonate is formed in double decomposition reactions; soluble carbonates are sufficiently alkaline to precipitate aluminium hydroxide and produce carbon dioxide. The reaction of aluminium sulfate and sodium bicarbonate forms carbon dioxide and aluminium hydroxide which stabilises the formation of a foam. This reaction was the basis of an early fire extinguisher invented by Aleksandr Loran in 1904.

Uses

Aluminium carbonate, along with aluminium hydroxide and aluminium oxide, is a phosphate-binding drug that is sometimes administered to dogs and cats to bind intestinal phosphate and prevent the absorption of dietary phosphate as well as to decrease absorption of phosphate excreted by the pancreas. It is seldom used in humans because of concerns with toxicity, but cats and dogs do not appear to have a toxic response to its presence.

References

"green air" © 2007 - Ingo Malchow, Webdesign Neustrelitz
This article based upon the http://en.wikipedia.org/wiki/Aluminium_carbonate, the free encyclopaedia Wikipedia and is licensed under the GNU Free Documentation License.
Further informations available on the list of authors and history: http://en.wikipedia.org/w/index.php?title=Aluminium_carbonate&action=history
presented by: Ingo Malchow, Mirower Bogen 22, 17235 Neustrelitz, Germany