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Iron oxide

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Iron oxides are chemical compounds. There are sixteen known iron oxides. Iron oxides are used in pigments. It is used in both man-made and natural pigments.


Venetian red (haematite), Magnetite (Fe304), or a mixture of oxides make black or purple pigments. The umber’s, sienna’s and ochre’s are oxides or hydrated oxides of a yellow to chestnut colour.

Various iron oxides