Ferric

Ferric is a term often used in chemistry to refer to compounds that contain the element iron in a +3 oxidation state. It is derived from the Latin word ferrum for iron.

Chemical Properties

Ferric ions are often found in nature as iron(III) oxides or hydroxides. These compounds are commonly known as rust, which is a form of corrosion that occurs with iron and its alloys. Ferric ions can also form complex ions with other elements, such as the ferricyanide ion, [Fe(CN)6]3−.

Biological Importance

In biological systems, ferric ions are essential for the function of many enzymes and proteins. For example, the heme group in hemoglobin, which is responsible for oxygen transport in red blood cells, contains a ferric ion. Iron is also an important nutrient for humans and other animals, and it is often found in foods in the ferric state.

Industrial Uses

Ferric compounds are used in a variety of industrial applications. For example, ferric chloride is used in water treatment to remove impurities. Ferric oxide is used as a pigment in paints and ceramics, and it is also used in the manufacture of steel.

Health Effects

Excessive exposure to ferric compounds can have negative health effects. Ingesting large amounts of ferric ions can cause iron poisoning, which can be fatal in severe cases. On the other hand, iron deficiency can lead to anemia, a condition characterized by a lack of healthy red blood cells.

See Also

• Iron
• Ferrous
• Iron(III) oxide
• Hemoglobin
• Iron poisoning
• Anemia

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  Potassium trioxalatoferrate(III) large crystals
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  Pourbaix Diagram of Iron
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  Fe(bipy)3 redox
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  Iron(III) oxide sample
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  L.s. vs h.s. d5 octahedral