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para-dichlorobenzene

[par-uh-dahy-klawr-uh-ben-zeen, -ben-zeen, -klohr-] /ˌpær ə daɪˌklɔr əˈbɛn zin, -bɛnˈzin, -ˌkloʊr-/
noun, Chemistry
1.
a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
Also, paradichlorobenzene.
Also called PDB, para.
Compare dichlorobenzene.
Origin
1875-1880
1875-80; para-1 + di-1 + chloro-2 + benzene
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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6
7
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