51Թ

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pentachloronitrobenzene

[pen-tuh-klawr-oh-nahy-troh-ben-zeen, -ben-zeen, -klohr-]

noun

Chemistry.
  1. a crystalline compound, C 6 Cl 5 NO 2 , used as an herbicide and insecticide. PCNB



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51Թ History and Origins

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penta-pentachlorophenol