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The ferroferricous oxide is not ferrous metal ferrite (FeO2) nor a mixture thereof (Fe2O3). However, TR-Fe3O4 could be roughly regarded (FeO*Fe2O3) as a compound between ferrous oxide, ferric oxide, and iron oxide. This substance is insoluble but soluble in acid, water, alkali solution, and organic solvents (ethane and ether). The natural ferroferric dioxide is insoluble even in an acid solution. It can also be easily oxidized in air when it is wet. Also, iron oxide can be manufactured into na

What color is ferroferric oxide?

The ferroferricous oxide is not ferrous metal ferrite (FeO2) nor a mixture thereof (Fe2O3). However, TR-Fe3O4 could be roughly regarded (FeO*Fe2O3) as a compound between ferrous oxide, ferric oxide, and iron oxide. This substance is insoluble but soluble in acid, water, alkali solution, and organic solvents (ethane and ether). The natural ferroferric dioxide is insoluble even in an acid solution. It can also be easily oxidized in air when it is wet. Also, iron oxide can be manufactured into na

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