Description

Product: Iron(II,III) oxide

Other names: ferrous ferric oxide, ferroso ferric oxide, iron(II,III) oxide, magnetite, black ironoxide, lodestone, rust

Molecular Formula: Fe3O4, FeO.Fe2O3

CAS number: ********9

Appearance: black powder

Brief introduction:

Iron(II,III) oxide is the chemical compound with formula Fe3O4. It is one of a number of iron

oxides. It is found in nature as the mineral magnetite. It contains both Fe2+ and Fe3+ ions and is

sometimes formulated as FeO.Fe2O3. It is encountered in the laboratory as a black powder. It

exhibits permanent magnetism and is ferrimagnetic, but is sometimes incorrectly described as

ferromagnetic. Its most extensive use is as a black pigment which is synthesised rather than being

extracted from the naturally occurring mineral as the particle size and shape can be varied by the

method of production.