An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Assessing and Managing Chemicals under TSCA

Tributyl Phosphate; Final Test Rule

EPA is issuing a final test rule under section 4 of the Toxic Substances Control Act (TSCA) requiring manufacturers and processors of tributyl phosphate (TBP. CAS No. 126-73-3) to perform testing for health effects (oncogenicity, neurotoxicity, reproduction and developmental toxicity, mutagenicity, dermal sensitization, and oral/dermal phannacokinetics), environmental effects (acute effects on algae, fish and aquatic invertebrates, and triggered chronic effects on fish and aquatic, invertebrates and sediment bioassay), and chemical fate (vapor pressure. Koc. and hydrolysis rate).

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.