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Aluminium sulfide is a chemical compound with the formula Al 2 S 3. This colorless species has an interesting structural chemistry, existing in several forms. The material is sensitive to moisture, hydrolyzing to hydrated aluminium oxides/hydroxides. [1] This can begin when the sulfide is exposed to the atmosphere.
A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).
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 ...
The only stable chalcogenides under normal conditions are aluminium sulfide (Al 2 S 3), selenide (Al 2 Se 3), and telluride (Al 2 Te 3). All three are prepared by direct reaction of their elements at about 1,000 °C (1,832 °F) and quickly hydrolyse completely in water to yield aluminium hydroxide and the respective hydrogen chalcogenide .
magnesium aluminium oxide: 12068-51-8 Al 2 O: dialuminium monoxide: 12004-36-3 Al 2 O 2: dialuminium dioxide: 12252-63-0 Al 2 O 3: aluminium oxide: 1344-28-1 Al 2 O 5 Si: aluminium silicate: 1302-76-7 Al 2 SiO 5: andalusite: 12183-80-1 Al 2 O 7 Si 2: metakaolinite: 1332-58-7 Al 2 S: dialuminium monosulfide: 12004-45-4 Al 2 S 3: aluminium ...
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.
aluminium arsenide: 22831–42–1 AlB 2: aluminium diboride: 12041–50–8 AlB 12: aluminium dodecaboride: 12041–54–2 AlBr 3: aluminium bromide: 7727–15–3 AlBr 3 •6H 2 O: aluminium bromide hexahydrate: 7784–11–4 Al(CHO 2) 3: aluminium formate: 7360–53–4 AlCl 3: aluminium chloride: 7446–70–0 AlCl 3 •6H 2 O: aluminium ...
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.