CFR›Title 40›Chapter I›Part 261›40 CFR Part 261 Subpart C Citation40 CFR Part 261 Subpart CContainsSections 261.20–261.24CorpusDaily eCFRDisplayed edition2026-06-29Last updated2026-06-29 Subpart C—Characteristics of Hazardous Waste Sections 261.20 § 261.20 General. 261.21 § 261.21 Characteristic of ignitability. 261.22 § 261.22 Characteristic of corrosivity. 261.23 § 261.23 Characteristic of reactivity. 261.24 § 261.24 Toxicity characteristic. Authority42 U.S.C. 6905, 6912(a), 6921, 6922, 6924(y) and 6938.Source45 FR 33119, May 19, 1980, unless otherwise noted. Previous I Subpart I—Use and Management of Containers Next CC Subpart CC—Air Emission Standards for Tanks and Containers