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|Section2= |Section7= }} 1,2-Dichlorobenzene, or orthodichlorobenzene (ODCB), is an organic compound with the formula C6H4Cl2. This colourless liquid is poorly soluble in water but miscible with most organic solvents. It is a derivative of benzene, consisting of two adjacent chlorine centers. ==Production and uses== 1,2-Dichlorobenzene is obtained as a side-product of the production of chlorobenzene: : + → + HCl The reaction also affords the 1,4- and small amounts of the 1,3-isomer. The 1,4- isomer is preferred over the 1,2- isomer due to steric hindrance. The 1,3- isomer is uncommon because chlorine, like all halogens, are ortho/para- directors in terms of electrophilic aromatic substitution and the 1,3- isomer is a meta- compound. It is mainly used as a precursor to 1,2-dichloro-4-nitrobenzene, an intermediate in the synthesis of agrochemicals.〔Gerald Booth (2007). "Nitro Compounds, Aromatic" in ''Ullmann's Encyclopedia of Industrial Chemistry'' Wiley-VCH, Weinheim, 2005.〕 In terms of niche applications, 1,2-dichlorobenzene is a versatile, high-boiling solvent. It is a preferred solvent for dissolving and working with fullerenes. It is an insecticide for termites and locust borers, historically used by the United States Forest Service to combat widespread bark beetle outbreaks.〔http://www.youtube.com/watch?v=axs2jR2HC6I〕 1,2-Dichlorobenzene is also used in softening and removing carbon-based contamination on metal surfaces.〔Technical Order 2J-1-13〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「1,2-Dichlorobenzene」の詳細全文を読む スポンサード リンク
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