Fe^2O^3

Fe^2O^3 refers to iron(III) oxide. It is a compound made up of iron ions (Fe3+) and oxide ions (O2-) in a 2:3 ratio. Iron(III) oxide is commonly known as rust and has a reddish-brown color. It is a common substance found in nature and is also used in various industries, including the production of steel, pigments, and as a catalyst.