{"data":{"id":"us/40-cfr-261.22","jurisdiction":"us","citation":"40 CFR 261.22","heading":"Characteristic of corrosivity.","body":"(a) A solid waste exhibits the characteristic of corrosivity if a representative sample of the waste has either of the following properties:\n(1) It is aqueous and has a pH less than or equal to 2 or greater than or equal to 12.5, as determined by a pH meter using Method 9040C in “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods,” EPA Publication SW-846, as incorporated by reference in § 260.11 of this chapter.\n(2) It is a liquid and corrodes steel (SAE 1020) at a rate greater than 6.35 mm (0.250 inch) per year at a test temperature of 55 °C (130 °F) as determined by Method 1110A in “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods,” EPA Publication SW-846, and as incorporated by reference in § 260.11 of this chapter.\n(b) A solid waste that exhibits the characteristic of corrosivity has the EPA Hazardous Waste Number of D002.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER I—SOLID WASTES","PART 261—IDENTIFICATION AND LISTING OF HAZARDOUS WASTE","Subpart C—Characteristics of Hazardous Waste"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"5a6dc7648810a82e463e174dc653f1608d2943399bda955aee75a32e34e926d1","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-261.21","next":"us/40-cfr-261.23"},"notice":"GroundRules: Original legal text. Not legal advice."}