Topic summaryList of extremely hazardous substances Expand Summary Extracted from the Wikipedia article EPA list of extremely hazardous substances. This is the list of extremely hazardous substances defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. § 11002). The list can be found as an appendix to 40 CFR355. Updates as of 2006 can be seen on the Federal Register, 71 FR47121 (August 16, 2006). Wikipedia source
