p-Phenylenediamine

Molecular structure of Kevlar: the monomer subunit is bolded, dashed lines indicate hydrogen bonds.

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 composites. It is also an ingredient in hair dyes.

单词	Paraphenylenediamine
释义	Paraphenylenediamine 英语百科 p-Phenylenediamine 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 composites. It is also an ingredient in hair dyes.
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Paraphenylenediamine

p-Phenylenediamine