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Al(OH) 3 Molar mass: 78.003 g·mol −1 Appearance White amorphous powder Density: 2.42 g/cm 3, solid Melting point: 300 °C (572 °F; 573 K) Solubility in water.
corundum (Al 2 O 3) aluminium oxide hydroxides diaspore (α-AlO(OH)) boehmite or böhmite (γ-AlO(OH)) akdalaite (5Al 2 O 3 ·H 2 O) (once believed to be 4Al 2 O 3 ·H 2 O), also called tohdite; aluminium hydroxides. gibbsite (often designated as γ-Al(OH) 3, but sometimes as α-Al(OH) 3, [4] sometimes called hydrargillite or hydrargyllite)
The formula, Cu 2 CO 3 (OH) 2 shows that it is halfway between copper carbonate and copper hydroxide. Indeed, in the past the formula was written as CuCO 3 ·Cu(OH) 2. The crystal structure is made up of copper, carbonate and hydroxide ions. [37] The mineral atacamite is an example of a basic chloride. It has the formula, Cu 2 Cl(OH) 3.
When the Bayer liquor is cooled, Al(OH) 3 precipitates, leaving the silicates in solution. NaAl(OH) 4 → NaOH + Al(OH) 3. The solid Al(OH) 3 Gibbsite is then calcined (heated to over 1100 °C) to give aluminium oxide: [7] 2 Al(OH) 3 → Al 2 O 3 + 3 H 2 O. The product aluminium oxide tends to be multi-phase, i.e., consisting of several phases ...
Gibbsite, Al(OH) 3, is one of the mineral forms of aluminium hydroxide. It is often designated as γ-Al(OH) 3 [2]: 2 (but sometimes as α-Al(OH) 3 [3]). It is also sometimes called hydrargillite (or hydrargyllite). Gibbsite is an important ore of aluminium in that it is one of three main phases that make up the rock bauxite.
In the laboratory AlOH can be made by heating aluminium, so that it vapourises into low pressure hydrogen peroxide vapour. [3] Another method is to condense a mixture of aluminium vapour, hydrogen and oxygen with argon into a solid at 10K. Along with AlOH, there are also Al(OH) 2, Al(OH) 3, HAl(OH) 2, cyc-AlO 2 and AlOAl molecules formed. [4]
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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.