Iron Oxide Black Pigment Dye Fe3O4
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Super Fine Iron Oxide Black Pigment Dye Fe3O4 is also known as Magnetite, a mineral and one of the main iron ores. With the chemical formula is Fe3O4, it is one of the oxides of iron. Magnetite is ferrimagnetic, which means it is attracted to a magnet. It is the most magnetic of all the naturally-occurring minerals on Earth and can be used as a non-bleeding colorant for soaps and other cosmetic uses.