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Element or compound molecule halogen atoms in the reaction process to produce halide(Halogenated organic compounds). As a kind of halogenated synthetic methods, widely used in organic synthesis to produce a variety of important raw materials, intermediates and industrial solvents etc..
Organic halogenation in industrial production has been widely used since 1920s. In 1923, the company completed the German Hoechst gas phase methane chloride plant. In 1931, the industrial production of fluorine chlorine methane. In 1958, the Dow Chemical Corporation developed by ethylene, hydrogen chloride and air (or oxygen) oxidation chlorination synthesis two chloride.
The properties of various elements of halogen group are similar, but the active degree is different, so the specific conditions and methods of reaction are not the same. According to the introduction of halogen is different, can be divided into fluoride, Halogenated Aromatic Hydrocarbons,Halogenated Hydrocarbon,chloride, bromide and iodide, chloride and fluoride which is more commonly used.
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