O-Phenylenediamine

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

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Notion

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Science and technology

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What Wikipedia says

o-Phenylenediamine (OPD) is an organic compound with the formula C6H4(NH2)2. This aromatic diamine is an important precursor to many heterocyclic compounds. OPD is a white compound although samples appear darker owing to oxidation by air. It is isomeric with m-phenylenediamine and p-phenylenediamine.

Excerpt from the Wikipedia article “O-Phenylenediamine”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: PishT, CC BY-SA 4.0, via Wikimedia Commons.