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How to Distinguish Fe3O4 and Fe2O3?

wallpapers Industry 2020-09-30

1. Due to the different intensity of combustion in oxygen, the final colour is different. Ferric oxide is red, while ferric oxide is black.

2. Magnets can be used to distinguish: magnets will not attract Fe2O3; on the contrary, Fe3O4 will be drawn.

First of all, both are the products produced by the combustion of iron in oxygen. Still, the burning degree of iron trioxide in oxygen is not as violently as ferric oxide, and ferric oxide (Fe3O4) can be produced from ferric oxide (Fe2O3) Generated after full combustion.

Ferric oxide, the chemical formula Fe3O4. It can be roughly regarded as a compound composed of ferrous oxide and iron trioxide (FeO·Fe2O3). This substance is soluble in acid solution, insoluble in water, alkali solution, ethanol, ether and other organic solvents. The natural ferric oxide is insoluble in acid solution and is easily oxidized in the air in a humid state. Usually used as the pigment and polishing agent, it can also be used to make audiotapes and telecommunication equipment.

Ferric oxide, the chemical formula Fe2O3. Its reddish-brown powder is a low-grade pigment, industrially called iron oxide red, used in paint, ink, rubber and other industries, as a catalyst, a polishing agent for glass, gems, and metals, and as a raw material for ironmaking.

Biomedicine and other fields

Nano-iron oxide plays an essential role in the fields of medicinal capsules, drug synthesis, and the biomedical technology. In addition to its applications in magnetic materials, pigments, catalysis, and the biomedical fields, α-Fe2O3 also has broad application prospects in other areas. For example, nano-scale iron oxide has a good adsorption effect on Cr(VI), with the high adsorption efficiency, short adsorption times, and can be recycled and reused. It has particular application value for treating Cr(VI) in environmental sewage; Gas-sensitive materials made of nano-α-Fe2O3 have the characteristic of the fast response, strong selectivity, high sensitivity and the good stability; when preparing transparent iron trioxide, if the content of arsenic and heavy metals is strictly controlled, it can be used in food, cosmetics and other industries; because transparent iron oxide has the characteristics of translucent colouring, acid and alkali resistance and non-toxicity, it can also be used as a coating for the inner wall of can lids .


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Tag: Fe2O3