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Aluminium hydroxide gels can be dehydrated (e.g. using water-miscible non-aqueous solvents like ethanol) to form an amorphous aluminium hydroxide powder, which is readily soluble in acids. Heating converts it to activated aluminas, which are used as desiccants , adsorbent in gas purification, and catalyst supports .
Sodium aluminate is an inorganic chemical that is used as an effective source of aluminium hydroxide for many industrial and technical applications. Pure sodium aluminate is a white crystalline solid having a formula variously given as NaAlO 2, NaAl(OH) 4 , [3] Na 2 O·Al 2 O 3, or Na 2 Al 2 O 4. Commercial sodium aluminate is available as a ...
In neutral pH ranges (6–8), the insoluble aluminum hydroxide (Al(OH) 3) occurs. As pH decreases further, the Al(III) ion remains present. [2] Maintaining optimal pH is important for the removal of phosphorus from water. Phosphorus is most effectively removed at the neutral pH range, when the insoluble aluminum hydroxide is present.
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.
Similar to aluminium hydroxide, AlPO 4 is used as an antacid. Up to 20% of aluminium from ingested antacid salts can be absorbed from the gastrointestinal tract – despite some unverified concerns about the neurological effects of aluminium, [11] aluminium phosphate and hydroxide salts are thought to be safe as antacids in normal use, even ...
The most recent is the use of ion-exchange resin. [18] Achievable extraction efficiencies critically depend on the original concentration in the feed bauxite. At a typical feed concentration of 50 ppm, about 15 percent of the contained gallium is extractable. [18] The remainder reports to the red mud and aluminium hydroxide streams. [19]
Hydroxyaluminium(I), also known as Aluminium(I) hydroxide, is an inorganic chemical with molecular formula AlOH. It consists of aluminium in the +1 oxidation state paired with a single hydroxide . It has been detected as a molecular substance in the envelope of an oxygen -rich red supergiant star , a place where substances containing metals or ...
Aluminium hydroxide, Al(OH) 3, aluminium with three hydroxy groups attached, is a complete molecule, so it is not a "basic aluminium" compound. Aluminium acetate is a name for three salts in the solid state: dihydroxyaluminium aluminium acetate, hydroxyaluminium diacetate, and aluminium triacetate, Al(CH 3 CO 2) 3.