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Ferric oxide ( a type of IRON OXIDE) is a reddish-brown to black powder that occurs naturally as the mineral hematite. Ferric oxide is the basis of a series of pigments ranging from yellow to a red known as Venetian red. The finely powdered red form is used for polishing precious metals and diamonds, as well as in cosmetics.
coating, printing ink, paint, also as coloring agent for building material, rubber, paper-making, producing ferrites, recording tapes, pyrotechnics
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