The compound Fe2O3 is called ferric oxide or iron (III) oxide. Ferric oxide has three atoms of oxygen for every two atoms of iron. Manufacturers use this compound to produce the iron used in steel production.
Ferric oxide has several practical uses. As a very fine powder, this compound is useful for polishing jewelry. Some manufacturers use ferric oxide as a pigment in cosmetics and other products. Ferric oxide is also used to produce several different alloys, which are mixtures of metals and other elements. This compound has a molecular weight of 159.6882 grams per mole, according to PubChem Compound.