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Ferric oxide is the inorganic compound with the formula Fe2O3. It is one of the three main oxides of iron, the other two being iron(II) oxide (FeO), which is rare, and iron(II,III) oxide (Fe3O4), which also occurs naturally as the mineral magnetite.
F 0459 (OTTO) Ferric oxide, 99.998% Cas 1309-37-1 - used in the preparation of iron(III) oxide-hydrate gels.