{"data":{"id":"us/40-cfr-721.4080","jurisdiction":"us","citation":"40 CFR 721.4080","heading":"MNNG (N-methyl-N′-nitro-N-nitrosoguanidine).","body":"(a) Chemical substance and significant new use subject to reporting. (1) The chemical substance MNNG (N-methyl-N′-nitro-N-nitrosoguanidine) (CAS No. 70-25-7) is subject to reporting under this section for the significant new use described in paragraph (a)(2) of this section.\n(2) The significant new use is: Manufacture, import, or processing of 10,000 pounds or more per year per facility for any use.\n(b) Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph.\n(1) Recordkeeping. The following recordkeeping requirements are applicable to manufacturers, importers, and processors of this substance, as specified in § 721.125 (a), (b), and (c).\n(2) [Reserved]","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER R—TOXIC SUBSTANCES CONTROL ACT","PART 721—SIGNIFICANT NEW USES OF CHEMICAL SUBSTANCES","Subpart E—Significant New Uses for Specific Chemical Substances"],"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":"361a610fb23b8b90cdc8b0d16d88404d78220cf22ab96f5909ecc85bd114d896","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-721.4060","next":"us/40-cfr-721.4085"},"notice":"GroundRules: Original legal text. Not legal advice."}