p-Phenylenediamine

 

CAS No.: 106-50-3                                  EINECS: 203-404-7

Molecular Formula: C₆H₈N₂                Molecular weight: 108.14

Structural formula:

Property:

p-Phenylenediamine（PPD） is an organic compound with the formula C6H4(NH2)2. This derivative of aniline is a colorless solid when pure, but typically samples are partially oxidized and appear yellowish.

Specification:

Usage:

p-Phenylenediamine（PPD） is a precursor to aramid plastics and fibers such as Kevlar. This polymer arises from the reaction of p-Phenylenediamine （PPD）and Terephthaloyl Chloride. The reaction of p-Phenylenediamine（PPD） with Phosgene gives the Diisocyanate, a precursor to Urethane polymers.

p-Phenylenediamine（PPD） is easily oxidized, and for this reason, p-Phenylenediamine （PPD）is used as antiozonants in production of rubber products. p-Phenylenediamine （PPD） is also used as a developing agent in the C-41 color photographic film development process, reacting with the silver grains in the film and creating the colored dyes that form the image.

p-Phenylenediamine（PPD）is used in almost every hair dye on the market, regardless of brand. The darker the colour, usually the higher the concentrations. Some of the so-called "natural" and "herbal" hair colours, while ammonia-free, contains p-Phenylenediamine （PPD）. Some products sold as henna also contain p-Phenylenediamine（PPD） added, particularly so-called "black henna." In many cases, p-Phenylenediamine（PPD） causes allergic reaction, and can cause scarring in some people. p-Phenylenediamine （PPD） should never be applied directly to the skin in its pure form or mixed with anything else

Package and Storage: p-Phenylenediamine（PPD） is packed in 25kg in bag or fiber drum. Keep p-Phenylenediamine（PPD） in the clear and dry storage shed.

Keywords:

p-Phenylenediamine, P-PDA. 1, 4-Benzenediamine; 1,4-Diaminobenzene; C.I. 76060; Fur Black 41866