{"operation":"document","citation":"49 CFR 172.304","title":"Marking requirements.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) The marking required in this subpart—\n\n(1) Must be durable, in English and printed on or affixed to the surface of a package or on a label, tag, or sign.\n\n(2) Must be displayed on a background of sharply contrasting color;\n\n(3) Must be unobscured by labels or attachments; and\n\n(4) Must be locate","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-172-304.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-172-304.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-172-304","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-172.304","body":"(a) The marking required in this subpart—\n\n(1) Must be durable, in English and printed on or affixed to the surface of a package or on a label, tag, or sign.\n\n(2) Must be displayed on a background of sharply contrasting color;\n\n(3) Must be unobscured by labels or attachments; and\n\n(4) Must be located away from any other marking (such as advertising) that could substantially reduce its effectiveness.\n\n(b) [Reserved]\n\n[Amdt. 172-29, 41 FR 15996, Apr. 15, 1976, as amended by Amdt. 172-29B, 41 FR 57067, Dec. 30, 1976]","truncated":false,"body_characters":519}