File:Sulfonation Naphthalene.svg - Wikimedia Commons
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File:Naphthalene 200.svg - Wikipedia
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File:Masse volumique naphtalène.svg - Wikimedia Commons
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File:1,3-Diisopropyl naphthalene structure.svg - Wikimedia Commons
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File:Transformation of Naphthalene-2,7-disulfonic acid.svg - Wikimedia Commons