By Lynn L. Bergeson and Carla N. Hutton
The U.S. Environmental Protection Agency released on June 21, 2019, a proposed rule intended to reduce exposures to certain chemicals that are persistent, bioaccumulative, and toxic (PBT). EPA identified five chemicals pursuant to Section 6(h) of the Toxic Substances Control Act (TSCA): decabromodiphenyl ether (DecaBDE); phenol, isopropylated phosphate (3:1) (PIP (3:1)), also known as tris(4-isopropylphenyl) phosphate; 2,4,6-tris(tert-butyl)phenol (2,4,6-TTBP); hexachlorobutadiene (HCBD); and pentachlorothiophenol (PCTP). The proposed rule would restrict or prohibit manufacture (including import), processing, and distribution in commerce for many uses of all of the chemicals except HCBD, for which EPA is proposing no regulatory action. For the other four chemicals, the proposed rule includes recordkeeping requirements, as well as additional downstream notification requirements for PIP (3:1). Publication of the proposed rule in the Federal Register will begin a 60-day comment period. Our June 24, 2019, memorandum, “EPA Publishes Proposed PBT Chemicals Rule under TSCA,” provides a detailed review and analysis.