{"data":{"id":"us/40-cfr-98.208","jurisdiction":"us","citation":"40 CFR 98.208","heading":"Definitions.","body":"All terms used in this subpart have the same meaning given in the Clean Air Act and subpart A of this part. Additionally, some sector-specific definitions are provided below:\nCarrier gas means the gas with which cover gas is mixed to transport and dilute the cover gas thus maximizing its efficient use. Carrier gases typically include CO2, N2, and/or dry air.\nCover gas means SF6, HFC-134a, fluorinated ketone (FK 5-1-12) or other gas used to protect the surface of molten magnesium from rapid oxidation and burning in the presence of air. The molten magnesium may be the surface of a casting or ingot production operation or the surface of a crucible of molten magnesium that feeds a casting operation.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 98—MANDATORY GREENHOUSE GAS REPORTING","Subpart T—Magnesium 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":"efeace2bbcfae0e84dc049d761be41781a7eaf7d337d5b9589e62ba198dddbfb","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-98.207","next":"us/40-cfr-98.210"},"notice":"GroundRules: Original legal text. Not legal advice."}