EPA TSCA Regulatory Flag
jurisdiction: United States (US); framework: TSCA Inventory (Toxic Substances Control Act); listing_status: Contains non-confidential chemical substance listings on the TSCA Inventory; updated approximately every six months; 86,862 chemicals total, 42,578 active (as of July 2025 update); annex_or_entry: Inventory listings with fields such as ACTIVITY, CASRN, casregno, ChemName, DEF, EXP, FLAG, ID, UID, UVCB; special flags (e.g., FRI, PE1, PE2, PE3, R, S, SP, T, TP, XU, Y1, Y2) indicate regulatory or exemption status