Calcium compounds

Calcium Compounds are a group of substances that contain calcium and at least one other element. They are commonly found in nature and are used in a variety of applications, from construction materials to dietary supplements.

Overview

Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium.

Calcium compounds are commonly found in the earth's crust. The most common calcium compound is calcium carbonate, which is found in various forms such as limestone, marble, and chalk. Other important calcium compounds include calcium oxide (lime), calcium hydroxide (slaked lime), and calcium sulfate (gypsum).

Uses

Calcium compounds have a wide range of uses. Calcium carbonate is used in the construction industry as a building material and in the manufacture of cement. It is also used in the food industry as a calcium supplement and acidity regulator.

Calcium oxide is used in the production of steel and in water treatment. Calcium hydroxide is used in the manufacture of mortar and plaster, and calcium sulfate is used in the production of plaster of Paris and in the brewing industry.

Health and Safety

While calcium compounds are generally safe for use, some can cause health problems if not handled properly. For example, inhalation of calcium oxide dust can cause respiratory problems. Ingestion of large amounts of calcium carbonate can lead to hypercalcemia, a condition characterized by elevated levels of calcium in the blood.

See Also

• Calcium
• Calcium carbonate
• Calcium oxide
• Calcium hydroxide
• Calcium sulfate