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This image of a simple structural formula is ineligible for copyright and therefore in the public domain , because it consists entirely of information that is common property and contains no original authorship.
English Chemical structure of Paraphenylenediamine
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current 12:25, 16 December 2020 3,556 × 1,761 (6 KB) RicHard-59 ((Information |Description= ((en|Chemical structure of ''p''-phenylenediamine )) |Source= |Date= 2020-12-16 |Author=((Own)) |Permission= Pd |other_versions=File:P-phenylenediamine.png ))
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