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isomeric |
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isomeric [-mer′ik] Etymology: Gk, isos, equal, meros, part pertaining to a chemical phenomenon in which two compounds of the same chemical formula may differ in chemical and physical properties. The difference is the result of the arrangement of atoms in the respective molecules, either the connections between the atoms or their arrangements in three-dimensional space. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The OC pesticides measured were dieldrin, heptachlor epoxide, hexachlorobenzene (HCB), mirex, oxychlordane, hexachlorocydohexane (HCCH), [beta]-HCCH, two isomeric forms of dichlorodiphenyltrichloroethane (p,p'-DDT, o,p'-DDT), a major degradate and metabolite of DDT [dichlorodiphenyldichloroethene (p,p'-DDE)], and transnonachlor. Gutta percha is an isomeric polymer in which the double bonds have a trans- configuration. Determinations of the heat of formation of isomeric materials (Berthelot's kenomeries {systematic investigations of the structure-property relationship}), of boiling points and vapor pressures (represented by curved lines), of specific volumes and viscosity coefficients (Lothar Meyer), all have to serve to collect building blocks in this direction. |
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