Ferric oxide

Ferric oxide, also known as iron(III) oxide or simply rust, is a chemical compound with the formula Fe2O3. It is one of the three main oxides of iron, along with iron(II) oxide and iron(II,III) oxide. Ferric oxide is a dark red or brown solid that is insoluble in water.

Chemical properties

Ferric oxide is an ionic compound consisting of iron ions (Fe3+) and oxide ions (O2-). It is a paramagnetic substance, meaning it is attracted to magnetic fields but does not retain its magnetism when the field is removed. Ferric oxide is a corrosion product of iron and steel, and it is commonly known as rust.

Physical properties

Ferric oxide is a dark red or brown solid. It has a high melting point (1565 °C) and boiling point (3414 °C). It is insoluble in water but soluble in strong acids and bases.

Uses

Ferric oxide is used in a variety of applications. It is used as a pigment in paints, inks, and ceramics due to its rich, earthy color. It is also used in the production of ferrites, which are magnetic materials used in electronic devices. In addition, ferric oxide is used in the treatment of iron deficiency anemia, as it is a source of dietary iron.

Health effects

Exposure to ferric oxide can cause irritation to the eyes, skin, and respiratory tract. Ingestion can cause vomiting, diarrhea, and stomach pain. Long-term exposure can lead to iron overload, which can damage the liver and other organs.

See also

• Iron(II) oxide
• Iron(II,III) oxide
• Corrosion
• Ferrites