CFR›Title 40›Chapter I›Part 766 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 766—DIBENZO-PARA-DIOXINS/DIBENZOFURANS Subparts A Subpart A—General Provisions Sections 766.1–766.18 B Subpart B—Specific Chemical Testing/Reporting Requirements Sections 766.20–766.38 Authority15 U.S.C. 2603 and 2607.Source52 FR 21437, June 5, 1987, unless otherwise noted. Previous 763 Part 763—Asbestos Next 770 Part 770—Formaldehyde Standards for Composite Wood Products