On September 17, 2021, the U.S. Environmental Protection Agency (EPA) published a final rule amending the regulations applicable to phenol, isopropylated phosphate (3:1) (PIP (3:1)) promulgated under the Toxic Substances Control Act (TSCA). 86 Fed. Reg. 51823. Specifically, EPA is extending the compliance date applicable to the processing and distribution in commerce of certain PIP (3:1)-containing articles, and the PIP (3:1) used to make those articles, from March 8, 2021, to March 8, 2022. For such articles, EPA states that it is also extending the compliance date for the recordkeeping requirements applicable to manufacturers, processors, and distributors from March 8, 2021, to March 8, 2022. According to EPA, the articles covered by the amendment “include a wide range of key consumer and commercial goods such as cellular telephones, laptop computers, and other electronic and electrical devices and industrial and commercial equipment used in various sectors including transportation, life sciences, and semiconductor production.” The final rule is effective September 17, 2021. More information on the final PIP (3:1) rule and on EPA’s plan for a new rulemaking on persistent, bioaccumulative, and toxic (PBT) chemicals is available in our September 3, 2021, memorandum, “EPA Plans New Rulemaking for PBTs, Extends Compliance Dates for PIP (3:1) Rule.”