What is the TSCA Chemical Substance Inventory?
The Toxic Substances Control Act (TSCA) was enacted in 1976 to ensure that chemicals manufactured, imported, processed, or distributed in commerce, or used or disposed of in the United States do not pose any unreasonable risks to human health or the environment. Core regulatory provisions include TSCA section 4 (testing of chemical substances and mixtures), TSCA section 5 (manufacturing and processing notices), TSCA section 6 (regulation of hazardous chemical substances and mixtures), and TSCA section 8 (reporting and retention of information). TSCA section 8(b) provides EPA authority to “compile, keep current, and publish a list of each chemical substance that is manufactured or processed in the United States.” TSCA section 3(2)(A) states that “the term ‘chemical substance’ means any organic or inorganic substance of a particular molecular identity, including – (i) any combination of such substances occurring in whole or in part as a result of a chemical reaction or occurring in natur
