National Toxicology Program

National Toxicology Program

Scientific Review of Pentachlorophenol and By-products of its Synthesis

CASRN 87-86-5
Status: Listed in the Report on Carcinogens (RoC)
Fact Sheet

Primary Uses or Exposures: General biocide that has been used extensively as a fungicide, bactericide, herbicide and insecticide by agriculture and other industries. In 1987, over-the-counter use was banned and other uses restricted. Currently, pentachlorophenol is defined in the United States as a 'heavy duty' wood preservative that is used primarily in the treatment of utility poles and cross arms.

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NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.