Aluminium carbonate

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Aluminium carbonate
Uhličitan hlinitý.PNG
Other names
Aluminum carbonate
CAS number 14455-29-9 YesY
ChemSpider 10606614 YesY
Molar mass 233.99 g·mol−1
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Aluminium carbonate (Al2(CO3)3), is a carbonate of aluminium. It is not well characterised, one authority says that simple carbonates of aluminium gallium and indium are not known.[1]


It is formed in the reaction between an aluminium compound, such as aluminium sulfate (Al2(SO4)3), and sodium carbonate (Na2CO3)

Al2(SO4)3 + 3 Na2CO3 → Al2(CO3)3 + 3 Na2SO4

Some sources claim that Aluminium carbonate does not exist because it is so unstable.[2]


Aluminium carbonate is an unstable compound, decomposing to aluminium hydroxide (Al(OH)3) and carbon dioxide (CO2):

Al2(CO3)3 + 3 H2O → 2 Al(OH)3 + 3 CO2

Aluminium carbonate readily decomposes into carbon dioxide and aluminium hydroxide, which was exploited in a type of fire extinguisher invented by Aleksandr Loran in 1904.

See also[edit]