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Ferrosoferric Oxide
Fe3O4 (FeO·Fe2O3) 231.54
 Magnetite;
 Ferrous-ferric oxide;
 Iron (II, III) oxide [1317-61-9]

DEFINITION

Ferrosoferric Oxide contains NLT 97.0% and NMT 100.5% of Fe2O3, calculated on the ignited basis.

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