Iron Hydroxide Oxide CAS #20344-49-4

Iron oxides, including iron hydroxides and hydrated oxides, are natural minerals and geocatalysts that are abundant in the earth’s crust. Because the chemical properties of iron are very reactive, there are many secondary iron minerals, such as maghemite (γ-Fe2O3), hematite (α-Fe2O3), lepidocrocite (γ-FeOOH), goethite ( α-FeOOH), hydrated iron (III) oxide (Fe5HO8·4H2O) and magnetite (Fe3O4) exist in large amounts as suspended matter in the water system. Iron oxides play a very important role in various chemical and biological processes involving the transformation of organic compounds in aquatic ecosystems.

Hydrated iron (III) oxide refers to a natural nanoscale iron hydroxide mineral commonly found in the natural environment (soil, water sediments, etc.), and can also be easily synthesized in the laboratory. Hydrated iron(III) oxide is difficult to characterize due to its small size and low crystallinity.