Diphenylamine is an organic compound with the formula (C₆H₅)₂NH. The compound is a derivative of aniline, consisting of an amine bound to two phenyl groups. The compound is a colorless solid, but commercial samples are often yellow due to oxidized impurities.
Diphenylamine is used as a pre- or postharvest scald inhibitor for apples applied as an indoor drench treatment. Its anti-scald activity is the result of its antioxidant properties, which protect the apple skin from the oxidation products of α-farnesene during storage.[11] Apple scald is physical injury that manifests in brown spots after fruit is removed from cold storage.
a single oral dose of 100 mg of diphenylamine
A process for the production of predetermined variable amounts of diphenylamine and aniline from a feedstock con sisting essentially of phenol and ammonia involves catalyti cally reacting phenol and ammonia to produce aniline in situ and then reacting part of the aniline with other phenol and aniline to produce DPA, with the remaining aniline being removed from the reaction media as product.
