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SCIE 1P50 (73)
Lecture

Chapter 3 - Class #9

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Department
Science
Course
SCIE 1P50
Professor
Caroline Starrs
Semester
Fall

Description
Class 7ScienceSociety September 28 2011HAHs Halogenated Aromatic HydrocarbonsSome of the original uses were as chemical weapons CL2 has was used in the World War 1 as well as dichlorodiethyl sulphideLater in the later 1920s and 1930s industry began to manufacture polychlorinated biphenyls PCBs chlorouorocarbons CFCs or Freons and p pdichlorodiphenyltrichloroethane p pDDT generally called DDT These compounds made a major impact on society especially DDTPCBsPolychlorinated biphenyls PCBs are a class of 209 organic compounds Each one is often called a congenerOnly 140 congeners of the 209 are found in the environmentUsed as dielectricheat transfer uids in transformers in lubricating and other oils pesticides paints sealants and plasticsVery stable compoundsPBDEsHBCDsPolybrominated
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