raudhüdroksiid

Raudhüdroksiid, chemical formula Fe(OH)₃, is an inorganic compound. It is a reddish-brown or brown precipitate that forms when soluble iron(III) salts react with hydroxide ions. This reaction typically occurs in aqueous solutions.

The formation of raudhüdroksiid is a common observation in water chemistry and environmental science. It is often associated with the weathering of iron-bearing minerals and can contribute to the coloration of natural water bodies and soils. In industrial processes, raudhüdroksiid can be a byproduct or an intermediate in the production of iron compounds.

Raudhüdroksiid is generally considered insoluble in water, though its solubility can be influenced by pH and the presence of other ions. It is a relatively stable compound under normal conditions. When heated strongly, raudhüdroksiid decomposes to form iron(III) oxide (Fe₂O₃), also known as rust. This dehydration process is a key step in the conversion of iron hydroxides to iron oxides.

The presence of raudhüdroksiid can be indicative of certain environmental conditions. For instance, its formation in groundwater can signal the oxidation of dissolved iron. Its texture can vary from gelatinous to granular depending on the precipitation conditions. In some applications, raudhüdroksiid might be used as a pigment or as a precursor for the synthesis of other iron-based materials.