Pentachlorophenol (PCP) is a chlorinated phenolic biocide historically used as a wood preservative and pesticide, now subject to significant regulatory restrictions in the US and internationally under the Stockholm Convention on persistent organic pollutants. Imports enter under a single 10-digit line (2908110000), and EPA registration and compliance requirements govern its use in the United States, making documentation of intended end-use critical at entry. India is the primary supplier of PCP to the US market. Importers should be aware that EPA may require additional permitting or end-use certification depending on the application.

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