hipokloranu

Hipokloranu, commonly known as hypochlorite, refers to chemical species containing the chlorine-oxygen unit ClO− (the hypochlorite ion) and its related acids and salts, notably hypochlorous acid HOCl and hypochlorite salts such as sodium hypochlorite NaClO and calcium hypochlorite Ca(OCl)2. In aqueous solutions, HOCl and ClO− are in dynamic equilibrium, with the balance depending on pH. The pKa of HOCl is about 7.5, which means HOCl is the dominant form at near-neutral pH, while OCl− becomes more prevalent under alkaline conditions. Hypochlorite salts are typically white, water-soluble compounds used widely in industry and consumer products.

Industrial and consumer use: Hypochlorites are powerful oxidizing agents and are among the most common disinfectants and bleaching agents. Sodium hypochlorite solutions (household bleach) are widely used for surface disinfection, water treatment, and textile or paper bleaching. Calcium hypochlorite is a solid form used for sanitization and pool sanitation. HOCl itself is also recognized for antimicrobial activity and is sometimes formulated in neutral pH solutions for wound care and surface cleaning.

Production and chemistry: Industrial production often involves generating hypochlorite salts via chlorination of alkaline solutions, such as chlorine gas reacting with sodium or calcium hydroxide. In water, chlorine chemistry yields HOCl, which can oxidize organic matter and microbes; the effectiveness depends on pH, temperature, and concentration. Hypochlorites can form disinfection byproducts, and their oxidizing strength declines with increasing pH.

Safety and handling: Hypochlorites are strong oxidizers and corrosive. They can release chlorine gas when mixed with acids and may react with ammonia or organic materials to form harmful compounds. Proper storage, ventilation, and avoidance of incompatible substances are important.

---