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Iron Oxide is an inorganic compound. It is a very useful chemical compound which is made up of iron and oxygen. It occurs by the oxidation of iron. Its chemical formula is Fe2O3. Chemical Appearance Iron Oxide has the appearance of a red brown solid. It mostly comes in the powdered form. It is an odourless compound. It is insoluble in water. Chemical Applications and Strengths Iron Oxide is an extremely efficient chemical compound and therefore, has many commercial applications. Its main applications and strengths are: Iron Oxide is most popularly used as feedstock in the iron and steel industries for the mass production of iron, steel, and other alloys. The fine powder of iron oxide is known as rouge and it is used to polish metallic jewellery and lenses. It is also used as a cosmetic. Rouge cuts more slowly than modern polishes but it is still widely used because it gives a superior finish. CAS Number:1309-37-1 HS Code:28211010