p-Phenylenediamine,CAS 106-50-3

It is white to purple red crystal. It will turn purple red or dark brown when exposure to the air. It can be dissolved in water, alcohol, ether, chloroform and benzene. p-Phenylenediamines are white to slightly red crystalline solids. They have been described as gray “light brown” which may result from exposure to air.ChEBI: A phenylenediamine in which the amino functions are at positions 1 and 4 of the benzene nucleus.P-phenylenediamine is one of the simplest aromatic diamine with the pure p
P-phenylenediamine appears as a white to purple crystalline solid (melting point 234 F) that turns purple to black in air. Flash point 309 F. Toxic by skin absorption, inhalation or ingestion. Used for production of aramid fiber, antioxidants, as a laboratory reagent, in photographic developing, and as a dye for hair and furs.|Liquid; PelletsLargeCrystals|WHITE-TO-SLIGHTLY-RED CRYSTALS. TURNS DARK ON EXPOSURE TO AIR.|White to slightly red, crystalline solid.
P-phenylenediamine appears as a white to purple crystalline solid (melting point 234 F) that turns purple to black in air. Flash point 309 F. Toxic by skin absorption, inhalation or ingestion. Used for production of aramid fiber, antioxidants, as a laboratory reagent, in photographic developing, and as a dye for hair and furs.|1,4-phenylenediamine is a phenylenediamine in which the amino functions are at positions 1 and 4 of the benzene nucleus. It has a role as a hapten, a dye, a reagent and an allergen.|p-Phenylenediamine is primarily used as a dye intermediate and as a dye. Acute (short-term) exposure to high levels of p-phenylenediamine may cause severe dermatitis, eye irritation and tearing, asthma, gastritis, renal failure, vertigo, tremors, convulsions, and coma in humans. Eczematoid contact dermatitis may result from chronic (long-term) exposure in humans. In rats and mice chronically exposed to p- phenylenediamine in their diet, depressed body weights, but no other clinical signs of toxicity, were observed in several studies. No information is available on the reproductive, developmental, or carcinogenic effects of p-phenylenediamine in humans. EPA has not classified p-phenylenediamine with respect to carcinogenicity.|P-phenylenediamine is a Standardized Chemical Allergen. The physiologic effect of p-phenylenediamine is by means of Increased Histamine Release, and Cell-mediated Immunity.