CFR›Title 40›Chapter I›Part 84 ContainsSubpart A; Appendix A; Subparts B–CCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 84—PHASEDOWN OF HYDROFLUOROCARBONS Contents A Subpart A—Production and Consumption Controls Sections 84.1–84.37 Appendix A to Part 84 Appendix A to Part 84—Regulated Substances B Subpart B—Restrictions on the Use of Hydrofluorocarbons Sections 84.50–84.64 C Subpart C—Management of Regulated Substances Sections 84.100–84.120 AuthorityPub. L. 116-260, Division S, Sec. 103.Source86 FR 55201, Oct. 5, 2021, unless otherwise noted. Previous 82 Part 82—Protection of Stratospheric Ozone Next 85 Part 85—Control of Air Pollution from Mobile Sources