Description Aluminium hydroxide, Al(OH)3, is found in nature as the mineral gibbsite (also known as hydrargillite) and its three much rarer polymorphs: bayerite, doyleite and nordstrandite. Closely related are aluminium oxide hydroxide, AlO(OH), and aluminium oxide (or alumina), Al2O3. These compounds together are the major components of the aluminium ore bauxite. Basic Info Chemical Name aluminium hydroxide Synonyms Aluminium hydroxide; Aluminum hydroxide; CAS No. 21645-51-2 Molecular Formula AlH3O3 Molecular Weight 78.00360 PSA 60.69000 LogP -0.53040 Properties Appearance & Physical State white amorphous powder Density 2.4 Melting Point 300ºC Water Solubility insoluble Stability Stable. Incompatible with strong bases. Storage Condition Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. |