{"data":{"id":"us/40-cfr-table-4-to-subpart-ppp-of-part-63","jurisdiction":"us","citation":"40 CFR Table 4 to Subpart PPP of Part 63","heading":"Table 4 to Subpart PPP of Part 63—Known Organic HAP From Polyether Polyol Products","body":"Organic HAP/chemical name [CAS No.]\n1,3 Butadiene\n(106990)\nButylene Oxide\n(106887)\nEpichlorohydrin\n(106898)\nEthylene Oxide\n(75218)\nn-Hexane\n(110543)\nMethanol\n(67561)\nPropylene Oxide\n(75569)\nToluene\n(108883)\nCAS No. = Chemical Abstracts Service Registry Number.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart PPP—National Emission Standards for Hazardous Air Pollutant Emissions for Polyether Polyols Production"],"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":"d550c4d6c9a58e614f484e85c6a4b31f17b68005687c5822d30034567fbf9beb","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-3-to-subpart-ppp-of-part-63","next":"us/40-cfr-table-5-to-subpart-ppp-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}