Identification of a toxic impurity in commercial diphenylamine
Titel:
Identification of a toxic impurity in commercial diphenylamine
Auteur:
Clegg, S. Safe, S. Crocker, J. F. S.
Verschenen in:
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes
Paginering:
Jaargang 16 (1981) nr. 2 pagina's 125-130
Jaar:
1981
Inhoud:
The impurity in commercial diphenylamine which induces poly-cystic kidney disease in rats has been identified as N,N,N'-tri-phenyl-p-phenylenediamine. The structure of the compound was confirmed by mass and proton magnetic resonance spectrometry and by comparison with a synthetic standard prepared by the Ullman coupling of iodobenzene and p-phenylenediamine or N,N-diphenyl-p-phenylene-diamine. Laboratory studies with highly purified diphenylamine indicated that N,N,N'-triphenyl-p-phenylenediamine can be formed by heating diphenylamine.