An official website of the United States government.

We've made some changes to 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.

Pesticide Registration

PRN 88-2: Clustering of Quaternary Ammonium Compounds

This Notice announces that EPA has clustered the Quaternary Ammonium Compounds (Quats) into four groups for the purpose of testing chemicals in order to build a database that will support the continued registration of the entire family of quaternary ammonium compounds.

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