EPA is proposing to amend the regulations applicable to phenol, isopropylated phosphate (3:1) (PIP (3:1)) promulgated under the Toxic Substances Control Act (TSCA). Specifically, EPA is proposing to extend 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 until October 31, 2024, along with the associated recordkeeping requirements for manufacturers, processors, and distributors of PIP (3:1)-containing articles. The articles covered by this proposed rule 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, construction, agriculture, forestry, mining, life sciences, and semiconductor production. This proposed rule follows a recently-issued final rule that extended 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, along with the associated recordkeeping requirements.