Halogenation
Chemical reaction which adds one or more halogen elements to a compound / From Wikipedia, the free encyclopedia
"Fluorination" redirects here. For the addition of fluoride to drinking water, see Water fluoridation.
For the addition of chlorine, hypochlorite, etc. to drinking water, see Water chlorination.
In chemistry, halogenation is a chemical reaction which introduces one or more halogens into a chemical compound. Halide-containing compounds are pervasive, making this type of transformation important, e.g. in the production of polymers, drugs.[1] This kind of conversion is in fact so common that a comprehensive overview is challenging. This article mainly deals with halogenation using elemental halogens (F2, Cl2, Br2, I2). Halides are also commonly introduced using salts of the halides and halogen acids.[clarification needed] Many specialized reagents exist for and introducing halogens into diverse substrates, e.g. thionyl chloride.