The Toxic Substances Control Act is a United States law, passed by the 94th United States Congress in 1976 and administered by the United States Environmental Protection Agency, that regulates chemicals not regulated by other U.S. federal statutes,40 CFR 710.3(d) “Chemical substance” https://www.ecfr.gov/current/title-40/chapter-I/subchapter-R/part-710#p-710.3(d)(Chemical%20substance) including chemicals already in commerce and the introduction of new chemicals.