Phenylenediamine - 106-50-3

Key Functions: Industrial / Manufacturing, Tech, Energy & Fuel, Textile Applications

PPD is an aromatic amine in which two amine groups are bound to a benzene ring at the carbon 1 and 4 positions, also known as the para (p-) positions. PPD is manufactured via the reduction of p-nitroaniline in the presence of iron and hydrochloric acid (Ashford 2011, PubChem 2024a), and via the hydrogenation of p-phenylazoaniline (Ashford 2011). In the European Union (EU), PPD is restricted when used as a hair dye substance in oxidative hair products and PPD and its salts are restricted for use in products intended for coloring eyelashes for professional use only after mixing under oxidative conditions, with a maximum concentration of 2% (free base) (CIR 2023). In the United States, PPD is a member of hair dyeing agents commonly known as "coal tar hair dyes" regulated under the Federal Food, Drug, and Cosmetic Act (FD&C Act) (CIR 2023, U.S. FDA 2024). Historically, coal tar hair dyes were derived through coal mining; currently, these ingredients are petroleum-derived. In the United States, the Food and Drug Administration (U.S. FDA) has established specific requirements for the use of coal tar hair dye products. The product label must include the following warning language, and adequate directions for the recommended skin test must be provided

Chemical Synonyms 1,4-Benzenediamine; 1,4-Diaminobenzene; 1,4-Phenylenediamine; Benzene-1,4-diamine; C.I. 76060; C.I. 76076 (Salt/Mix); C.I. Developer 13; C.I. Oxidation Base 10; p-Aminoaniline; paraDiaminobenzene; p-Benzenediamine; p-Diaminobenzene; p-Phenylenediamine (PubChem 2024a). PPDA (ECHA 2024a). Trade names: Aminogen II; AMY40784; BASF ursol D; Benzofur D; Black for Fur D; Developer PF; Durafur Black R; EC 203-404-7; ELF Color; EN300-19064; Fouramine D; Fourrine 1; Fourrine D; FOURRINE I; Fur Black 41866; Fur Black 41867; FUR BLACK R; FUR Brown 41866; Fur Yellow; Furro D; Futramine D; MAKO H; Nako H; Orsin; Oxidation base 10; P0170; Pelagol D; Pelagol DR; Pelagol Grey D; Peltol D; p-phenylenediamine base; pPhenylenediaMine(p-PDA); p-Phenylenediamine, >=99.0% (GC/NT); p-Phenylenediamine, flakes, >=99.5%; p-Phenylenediamine, technical, >=97.0% (GC/NT); p-Phenylenediamine, zone-refined, purified by sublimation, >=99%; Q415024; Renal PF; Rodol D; Santoflex IC; Santoflex LC; STR01091; Tertral D; Ursol D; Zoba Black D (PubChem 2024a). PPDA 99.5% OR (ECHA 2024a).

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