Abstract
1. The metabolism of pentachlorophenol in rats was studied.
2. Metabolites isolated from rat urine and identified were: 2,3,4,5-tetrachlorophenol, 2,3,4,6-tetrachlorophenol, 2,3,5,6-tetrachlorophenol, tetrachlorocatechol, tetrachloro-resorcinol, trichlorohydroquinone, tetrachlorohydroquinone, and traces of trichloro-1,4-benzoquinone, and tetrachloro-1,4-benzoquinone.