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.

Polychlorinated Biphenyls (PCBs)

Table of Polychlorinated Biphenyl (PCB) Congeners

This contains a list of all PCB congeners, which is any single, unique well-defined chemical compound in the PCB category. The name of a congener specifies the total number of chlorine substituents and the position of each chlorine. 

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