P-Phenylenediamine

Rarity: Uncommon

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At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

p-Phenylenediamine (PPD) is an organic compound with the formula C6H4(NH2)2. This derivative of aniline is a white solid, but samples can darken due to air oxidation. It is mainly used as a component of engineering polymers and synthetic fibers like Twaron and Kevlar.

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

Image: RicHard-59, Public domain, via Wikimedia Commons.