Hydrated iron oxides
What is Iron oxide?Iron(III) oxide is also used as a pigment under the names "Pigment Brown 6", "Pigment Brown 7", and "Pigment Red 101". Some of them, e.g., Pigment Red 101 and Pigment Brown 6, are approved by the US Food and Drug Administration (FDA) for use in cosmetics. Iron oxides are used as pigments in dental composites alongside titanium oxides. Iron(III) oxide was the most common magnetic particle used in all types of magnetic storage and recording media, including magnetic disks (for d