Pentachlorophenol (penta or PCP) was first introduced for use as a wood preservative in 1936 by Dow Chemical Company and Monsanto Chemical Com- Penta has since been used as an herbicide on ornamental lawns, golf courses, aquatic areas, and rights-of-way; for control of subterranean termites; as an anti-microbial agent in cooling tow- ers, adhesives, latex paints, paper coatings, cements used with food can ends and seals, coatings in reusable bulk food storage containers, photographic solutions, leather tanneries, and pulp and paper mills; and, as a disinfectant
