Aluminium triacetate

It has therapeutic applications for its anti-itching, astringent, and antiseptic properties,[5] and, as an over-the-counter preparation like Burow's solution,[6] it is used to treat ear infections.

[7][8] Burow's solution preparations have been diluted and modified with amino acids to make them more palatable for use as gargles for conditions like aphthous ulcers of the mouth.

[4] The use of the "tri" multiplying prefix in the name aluminium triacetate, while not technically required, is regularly used to avoid potential confusion with related compounds with hydroxo ligands.

These three compounds are distinct in the solid phase but are usually treated as a group and described collectively as aluminium acetate in solution, due to the triacetate hydrolyzing to a mixture which includes the other two forms.

[17] The other image is a molecular form with the three acetate groups covalently bonded to the metal centre in a trigonal planar geometry and intermolecular interactions holding the molecules together with each other in the crystal structure.

In addition, the investigations demonstrate that a significant solution-phase species is an Al13 tridecamer,[21] a moiety reported in conflicting mechanisms of hydrolysis and polymerisation aluminium solutions.

[5] The Food and Drug Administration has approved it for use for "temporary relief of minor skin irritations due to ... 'poison ivy,' 'poison oak,' 'poison sumac,' 'insect bites,' 'athlete's foot,' or 'rashes caused by soaps, detergents, cosmetics, or jewelry.

'"[32] For these applications, over-the-counter preparations such as Burow's solution are typically used,[6] while diluted forms are used as gargles for conditions like aphthous ulcers of the mouth, including with amino acid additives to improve palatability and taste.

[40] The proposal was based on infrared spectroscopic data, and was subsequently challenged by work suggesting a structure with two bridging hydroxyl ligands connecting a dinuclear core, Az2Al(μ-OH)2AlAz4−2, with two alizarin moieties each chelating to each aluminium centre.

[41] They reported that the degree of hydration was dependent on the identity of the counter-ion, with the sodium salt being a stable tetrahydrate with a monohydrate being formed from potassium hydroxide.

[Fe 3 3 –O)(OAc) 6 (H 2 O) 3 ] + , the cation found in iron(III) acetate
Kiel and Heertjes' structure for the anion of Ca[Al(H
2
O)(OH)Az
2
]•2H
2
O
, [ 36 ] which alizarin forms with an aluminium mordant
Wunderlich and Bergerhoff's structure for alizarin bound to an aluminium mordant as CaAz
2
Al(μ-OH)
2
AlAz
2
Ca
[ 11 ]