calciumhypochloriet

Calciumhypochloriet, also known as calcium hypochlorite, is an inorganic compound with the chemical formula Ca(OCl)2. It is a strong oxidizing agent and a source of available chlorine, typically sold as a dry granular or tablet product containing about 65–70% available chlorine. It is widely used as a disinfectant and bleaching agent in water treatment and sanitation, and as a bleaching agent in the textile and paper industries.

Production and composition commonly involve reacting calcium hydroxide (slaked lime) with chlorine gas to form calcium hypochlorite and calcium chloride as a byproduct. The product is usually dried and granulated for commercial use.

Properties include a white to grayish-white powder or pellets. Calcium hypochlorite is moisture-sensitive and decomposes slowly in air. It is readily soluble in water, releasing hypochlorous acid (HOCl) and calcium ions, which provide sanitizing action. In solution its efficacy depends on pH, with HOCl formation favored at lower pH.

Applications are broad. In water treatment, calcium hypochlorite disinfects drinking water, sanitizes surfaces, and treats wastewater. In swimming pools it serves as a chlorine source to maintain residual sanitizing concentrations. It is also used for bleaching textiles, paper, and other cellulose materials.

Safety and handling considerations include its nature as a strong oxidizer, which can react violently with organic materials or reductants. It can release chlorine gas if mixed with acids or contaminated by certain chemicals. It is corrosive to skin and eyes; handling requires appropriate protective equipment. Storage should be in a cool, dry, ventilated area away from heat, acids, and combustibles. Environmental concerns include potential toxicity to aquatic life if released in large amounts.