p-Phenylenediamine CAS 106-50-3 PPD

P-phenylenediamine (PPD) is an organic compound with the molecular formula C 6H 4 (NH 2) 2. This aniline derivative is a white strong, however the sample will darken because of air oxidation. It is mainly utilized as engineering polymer and also Kevlar composite materials. It is additionally an active ingredient in hair dyes as well as is periodically utilized as a substitute for henna.

P-phenylenediamine is among the simplest fragrant diamines. The pure product is white to purplish red crystal. It turns purple or dark brown when revealed to air. A little soluble in cold water, soluble in ethanol, ether, chloroform and also benzene. It can be utilized to produce azo dyes, high molecular polymers, hair dyes, rubber anti-oxidant and designer, generally utilized for Kevlar, azo dyes, sulfur dyes, acid dyes, and so on. It is made use of to create black hair D, black fur dB, brown fur N2 as well as rubber antioxidant DNP, DOP and megabytes. It can likewise be utilized as basic material for cosmetics and also hair p-phenylenediamine series, fuel polymerization prevention and also designer.

As a chemical color, p-phenylenediamine is presently approved for the manufacturing of hair dyes, but there are clear constraints on its use. According to China’s sanitary requirement for cosmetics, the content of p-phenylenediamine in hair dyes will not surpass 6%. According to specialists, although the content of p-phenylenediamine in the five “yixihei” hair shampoos is in between 1.1% and 1.4%. Nonetheless, the hair shampoo is made use of regularly, and long-term accumulation is very easy to position a threat to the health and wellness of consumers. Presently, there is no literary works on whether phenylenediamine is carcinogenic; However, some literary works have actually shown that p-phenylenediamine medicines are toxic natural compounds. Refer to page 980 of reagent manual (2nd Edition) published by Shanghai Science as well as Innovation Press (november1985). International research studies have shown that the occurrence price of breast cancer cells, skin cancer and leukemia rises among people that usually color their hair. Additionally, p-phenylenediamine is additionally a frequently made use of sensitive reagent for the detection of iron as well as copper. It is additionally utilized worldwide for airplane covering, inner membrane layer of bulletproof clothes and also wall finish.