Revision as of 17:55, 1 February 2009 edit Doseiai2 (talk \| contribs) Extended confirmed users 7,303 edits ←Created page with ''''Polyhalogenated compounds''' (PHC's) are any compounds with multiple substitutions of halogens. They are of particular interest and importance because [[halogen...'		Revision as of 18:20, 1 February 2009 edit undo Doseiai2 (talk \| contribs) Extended confirmed users 7,303 edits No edit summary Next edit →
Line 1: '''Polyhalogenated compounds''' (PHC's) are any compounds with multiple substitutions of halogens. They are of particular interest and importance because [[halogens]] generally doare ~~not~~highly ~~react~~reactive and ~~therefore~~also [[bioaccumulate]] in humans, and comprise a superset of which has many toxic and carcinogenic industrial chemicals as members. [[PBDE]]'s, [[PCB]]'s, and [[PFC]]'s are all ~~members of this~~polyhalogenated ~~group~~compounds. They are generally non-miscible in organic solvents or water, but miscible in some [[hydrocarbons]] from which they often derive. ==Uses== Despite bioaccumulating in humans, patents have been filed for removal of halogen by electrolysis<ref>[http://www.patentstorm.us/patents/4585533/description.html US Patent 4585533 - Removal of halogen from polyhalogenated compounds by electrolysis]</ref> during manufacturing, though toxic chlorinated compounds may be created as byproducts of chlorinated compounds. Another method during manufacture is to use anaerobic bacteria<ref>[http://www.nature.com/nature/journal/v368/n6472/abs/368627a0.html Metabolism of polyhalogenated compounds by a genetically engineered bacterium]</ref>▼ PHC's are used in a vast array of manufactured products, from wood treatments, to cookware coatings, to non-stick, waterproof, and fire-resistant coatings, cosmetics, medicine, electronic fluids, food containers and wrappings, in everything from [[furniture]] and furnishings, [[automobiles]], [[airplanes]], [[plastics]], [[clothing]] and cloth, surgery, insulation, adhesives, paints, sealants, lubricating oils, polyurethane foams, cancer therapy and medical imaging. ==Types== * Polycholorinated, e.g. [[PCB]]'s * Polybrominated, e.g., [[PBDE]]'s * [[Perflourinated compounds]] * Polyiodinated ==Breakdown of Compounds== ▲Despite bioaccumulating in humans, patents have been filed for removal of halogen by electrolysis<ref>[http://www.patentstorm.us/patents/4585533/description.html US Patent 4585533 - Removal of halogen from polyhalogenated compounds by electrolysis]</ref> during manufacturing, though toxic chlorinated compounds may be created as byproducts of chlorinated compounds. Another method during manufacture is to use anaerobic bacteria <ref>[http://www.nature.com/nature/journal/v368/n6472/abs/368627a0.html Metabolism of polyhalogenated compounds by a genetically engineered bacterium]</ref> ==References== {{reflist}} {{HealthIssuesOfPlastics}} [[Category:Persistent organic pollutants]]

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