What is Calcium chloride

Calcium chloride (CaCl₂) is a chemical compound composed of calcium and chlorine. It is a type of salt that is highly soluble in water and is commonly used for various industrial, commercial and domestic applications. Here are some of its uses and properties:

What is Calcium chloride

1. De-icing and dust control: Calcium chloride is often used as a de-icing agent to melt snow and ice on roads, sidewalks, and other surfaces during the winter. It lowers the freezing point of water, prevents ice formation and aids in the removal of existing ice.

2. Food and beverage industry: Calcium chloride is used as a food additive as E509. It is used to increase the firmness of fruits and vegetables, to improve the texture of canned foods, and as a calcium supplement.

3. Desiccant: Calcium chloride is hygroscopic, meaning it has a strong affinity for water and can absorb moisture from the air. It is used as an absorbent to control moisture in various applications, such as in packaging to prevent moisture-related damage to products.

4. Concrete and construction: In concrete, calcium chloride is sometimes used as an accelerator during the setting process. This helps the concrete set more quickly, which can be beneficial in cold weather when slower setting times can reduce strength.

5. Oil and gas industry: Calcium chloride is used in the oil and gas industry to increase the density of drilling fluid, control well pressure, and prevent mud swelling.

6. Pharmaceuticals: It is used as a source of calcium in pharmaceutical products and supplements.

7. Chemical Manufacturing: Calcium chloride is used in a variety of chemical processes, including as a drying agent in certain solvent reactions and as a catalyst in chemical reactions.

8. Aquarium: It can be used in aquarium to provide a source of calcium for aquatic organisms and to maintain proper hardness of water.


  • Calcium chloride is a white, crystalline solid at room temperature.
  • It is highly soluble in water, and its solution releases heat when dissolved, making it useful in some heat-generating applications.
  • It has a strong affinity for moisture and can attract water vapor from the air.
  • It is a salt and must be handled with care, as it can be corrosive to metals.
  • It is important to note that while calcium chloride has many practical applications, it must be handled with care, as it can be an irritant to the skin, eyes, and respiratory system. When using calcium chloride, it is recommended to follow safety guidelines and wear the proper protective equipment.