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Aluminium sulfate is a salt with the formula Al 2 (SO 4) 3.It is soluble in water and is mainly used as a coagulating agent (promoting particle collision by neutralizing charge) in the purification of drinking water [3] [4] and wastewater treatment plants, and also in paper manufacturing.
This page provides supplementary chemical data on aluminium sulfate. Material Safety Data Sheet The handling of this chemical may incur notable safety precautions. ...
A Tutton salt is a double sulfate of the typical formula X 2 SO · 4 Y SO 4 ·6H 2 O, where X is a monovalent cation, and Y a divalent metal ion. Double sulfates of the composition X 2 SO 4 ·2 Y SO 4, such that X is a monovalent cation and Y is a divalent metal ion are referred to as langbeinites, after the prototypical potassium magnesium ...
Potassium alum is now produced industrially by adding potassium sulfate to a concentrated solution of aluminium sulfate. [33] The aluminium sulfate is usually obtained by treating minerals like alum schist, bauxite and cryolite with sulfuric acid. [34] If much iron should be present in the sulfate then it is preferable to use potassium chloride ...
The stoichiometric ratio is 34.2% aluminum and 65.8% perchlorate by mass. A ratio of seven parts potassium perchlorate to three parts dark pyro aluminium is the composition used by most pyrotechnicians. For best results, the aluminium powder should be "Dark Pyro" grade, with a flake particle shape, and a particle size of fewer than 10 micrometres.
Ammonium aluminium sulfate, also known as ammonium alum or just alum (though there are many different substances also called "alum"), is a white crystalline double sulfate usually encountered as the dodecahydrate, formula (NH 4)Al(SO 4) 2 ·12H 2 O. It is used in small amounts in a variety of niche applications.
As aluminium is a small atom relative to these chalcogens, these have four-coordinate tetrahedral aluminium with various polymorphs having structures related to wurtzite, with two-thirds of the possible metal sites occupied either in an orderly (α) or random (β) fashion; the sulfide also has a γ form related to γ-alumina, and an unusual ...
More conveniently, the salt can be made by reacting nitric acid with aluminium hydroxide. Aluminium nitrate may also be prepared a metathesis reaction between aluminium sulfate and a nitrate salt with a suitable cation such as barium, strontium, calcium, silver, or lead. e.g. Al 2 (SO 4) 3 + 3 Ba(NO 3) 2 → 2 Al(NO 3) 3 + 3 BaSO 4.