An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Assessing and Managing Chemicals under TSCA

Supporting Information for Proposed High-Priority Chemical Substances

Below are the supporting materials for the 20 proposed high-priority chemical substances announced on August 23, 2019. Each document includes the information, analysis, and basis for the proposed designation. These documents will be available for comment in their respective dockets through November 21, 2019.

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