Organochlorides are organic compounds in which one or more hydrogen atoms have been replaced by covalently bound chlorine atoms, typically on sp³- or sp²-hybridized carbon centers. They exhibit a wide range of physical and chemical properties depending on substitution pattern, degree of chlorination, and functional groups, but generally feature increased lipophilicity, altered volatility, and enhanced chemical stability relative to their nonchlorinated analogs. The polarized C–Cl bond influences reactivity in nucleophilic substitution, elimination, and metal-catalyzed cross-coupling processes. Organochlorides are important as synthetic intermediates, solvents, polymers, and specialty chemicals, and their environmental persistence and bioaccumulation potential are central topics in toxicology and regulatory science.
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