The TSCA is codified at 15 USC §2601-2671. The EPA has a TSCA Hotline (202-554-1404) that answers questions and provides information on TSCA matters. I have found them helpful.
The EPA's ChemView database provides "information on chemical health and safety data received by EPA and EPA's assessments and regulatory actions for specific chemicals under the Toxic Substances Control Act (TSCA)."