P-Phenylenediamine
Chemical compound
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 synthetic fibers like Twaron and Kevlar. It is also an ingredient in hair dyes and is occasionally used as a substitute for Henna.
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