Calcium hypochlorite

Calcium hypochlorite, Ca(OCl)₂, is an inorganic oxidizing compound that releases chlorine-based disinfectants in water and is used for bleaching and sanitation.

Hypochlorous acid: Hypochlorous acid, HOCl, is a weak chlorine-containing acid and a potent antimicrobial oxidant in water. Dissolved calcium hypochlorite forms hypochlorous acid, a major active disinfectant species.
Water chlorination: Water chlorination is the addition of chlorine-based compounds to water to control harmful microorganisms. Calcium hypochlorite supplies chlorine disinfectant for water treatment.
Calcium: Calcium is a chemical element with atomic number 20 and a common component of minerals and biological structures. Calcium ions balance the hypochlorite ions in the compound's formula.
Sodium hypochlorite: Sodium hypochlorite, NaOCl, is a chlorine compound commonly supplied as liquid bleach and used as a disinfectant. It offers similar disinfection in liquid form, while calcium hypochlorite is usually supplied as a solid.
Oxidizing agent: An oxidizing agent accepts electrons from another substance and is reduced in a chemical reaction. Calcium hypochlorite is a strong oxidizer, which explains its fire and reaction hazards.
Chlorine: Chlorine is a reactive halogen element used to make disinfectants and many industrial chemicals. Calcium hypochlorite releases chlorine-based oxidants whose chemistry derives from chlorine.
Swimming pool sanitation: Swimming pool sanitation uses physical and chemical treatments to limit pathogens and control water quality. Calcium hypochlorite is commonly used to maintain disinfectant levels in pools.
Hypochlorite: Hypochlorite is the chlorine oxyanion ClO⁻ and the name for compounds containing that ion. Two hypochlorite ions combine with one calcium ion in calcium hypochlorite.
Trichloroisocyanuric acid: Trichloroisocyanuric acid is a chlorine-releasing compound used in solid disinfectant tablets and swimming-pool products. It is a common alternative solid pool disinfectant that also contributes cyanuric acid.
Chemical incompatibility: Chemical incompatibility occurs when substances react dangerously or undesirably when mixed or brought into contact. Contact with acids, ammonia, or organic materials can cause hazardous reactions.

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