TSCA Chemical Substances Inventory (derived from the Initial Inventory of the Toxic Substances Control Act Chemical Substance Inventory) is a non-bibliographic dictionary listing chemical substances manufactured, imported, or in commercial use in the U.S. The Inventory was developed in response to Section 8(d) of the Toxic Substances Control Act (TSCA), public law 94-469. TSCA Initial Inventory is not a list of toxic chemicals since toxicity is not a criterion for inclusion in the list. For each substance the following are provided: CAS Registry number, preferred name, synonyms, and molecular formula. Confidential substances, definitions of complex substances with no appropriate molecular formulas, and additional synonyms, however, are not included in the online file.
TSCA Chemical Substances Inventory is prepared by the U.S. Environmental Protection Agency.