Calcium hypochlorite

Chemical compound used for water treatment and as a bleaching agent

Calcium hypochlorite

Calcium hypochlorite powder

Calcium hypochlorite is an inorganic compound with the formula Ca(OCl)_. It is commonly used for water treatment and as a bleaching agent. This compound is relatively stable and has greater available chlorine than sodium hypochlorite (liquid bleach). It is a white solid, although commercial samples appear yellow. It strongly smells of chlorine, owing to its slow decomposition in moist air.

Chemical properties

Calcium hypochlorite is a calcium salt of hypochlorous acid. It is a strong oxidizing agent and reacts with organic materials and reducing agents. The compound is typically sold as a white powder, granules, or tablets. It is soluble in water, where it forms a basic solution.

Production

Calcium hypochlorite is produced by treating lime (Ca(OH)_) with chlorine gas. The reaction can be represented as:

2 Cl_ + 2 Ca(OH)_ _ Ca(OCl)_ + CaCl_ + 2 H_O

This process yields a mixture of calcium hypochlorite, calcium chloride, and water.

Uses

Calcium hypochlorite is widely used for water treatment, especially for disinfecting drinking water and swimming pools. It is also used in the bleaching of textiles and paper. In water treatment, it is used to kill bacteria and other pathogens, making water safe for consumption.

Water treatment

In water treatment, calcium hypochlorite is used to disinfect water by releasing chlorine, which kills bacteria and other microorganisms. It is often used in swimming pools to maintain sanitary conditions.

Bleaching agent

Calcium hypochlorite is used as a bleaching agent in the textile and paper industries. It is effective in removing stains and whitening fabrics and paper products.

Safety

Calcium hypochlorite is a strong oxidizer and can react violently with organic materials and reducing agents. It should be stored in a cool, dry place, away from any flammable materials. Proper handling and storage are essential to prevent accidents.

Related pages

• Sodium hypochlorite
• Chlorine
• Water treatment
• Bleaching agent