P-Phenylenediamine CAS#106-50-3

Products Description of P-Phenylenediamine CAS#106-50-3 

p-Phenylenediamine, also known as Urs D, is one of the simplest aromatic diamines. The pure product is white to light purple crystals, which turn purple or dark brown when exposed to air. It is slightly soluble in cold water, soluble in ethanol, ether, chloroform and benzene.

It can be used to make azo dyes, high molecular polymers, fur dyes, rubber antioxidants and photo developers. It is mainly used in aramid, azo dyes, sulfur dyes, acid dyes, and can also be used as fur black D, fur blue black DB, fur brown N2, and rubber antioxidants DNP, DOP, MB. It is also used as a raw material for cosmetic hair dye Urs D series, gasoline inhibitors and developers. 

As a chemical dye, p-phenylenediamine is currently allowed to be used in the production of hair dyes, but the amount of use is clearly limited. According to my country's "Cosmetic Hygiene Standards", the content of p-phenylenediamine in hair dyes shall not exceed 6%. Experts said that although the p-phenylenediamine content of the five "one-wash black" shampoos ranges from 1.1% to 1.4%, the high frequency of use of shampoo and long-term accumulation can easily threaten the health and safety of consumers. There is no literature to prove whether p-phenylenediamine is a carcinogen; however, there is literature to prove that p-phenylenediamine is an organic toxic substance, as shown in the "Reagent Manual" (Second Edition) published by Shanghai Science and Technology Press in November 1985, page 980. Foreign studies have shown that the incidence of breast cancer, skin cancer, leukemia, and skin cancer will increase in people who dye their hair frequently. 

In addition, p-phenylenediamine is also a commonly used sensitive reagent for testing iron and copper. It is also used in aircraft coatings, inner membranes of bulletproof clothing, wall coatings, etc. internationally. The development and production of p-phenylenediamine started early in my country. Before 2003, the main manufacturers were concentrated in Jiangsu and Zhejiang, with a total of more than 20 companies. In 2004, my country's total p-phenylenediamine production capacity was about 13,500 tons/year. Market research shows that p-phenylenediamine is generally in a supply-demand ratio. Since the 1990s, the demand has increased at a rate of 3%-5%. The difficulty in transporting p-phenylenediamine and the pollution caused by its production have limited its production output.

p-Phenylenediamine Chemical Properties

Safety Information

Product Application of P-Phenylenediamine CAS#106-50-3 

It is an important dye intermediate, mainly used in the manufacture of azo dyes and sulfur dyes, and can also be used in the production of fur black D and rubber antioxidant DNP, etc.

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Fast delivery time

Inventory 2-3 working days New production 7-10 working days