{"operation":"document","citation":"49 CFR 173.223","title":"Packagings for certain flammable solids.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) Packagings for “Musk xylene,” “5-tert-Butyl-2,4,6-trinitro-m-xylene,” “Azodicarbonamide,” or “Isosorbide-5-mononitrate,” when offered for transportation or transported by rail, highway, or vessel, must conform to the general packaging requirements of subpart B of part 173, and to the requirement","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-173-223.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-173-223.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-173-223","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-173.223","body":"(a) Packagings for “Musk xylene,” “5-tert-Butyl-2,4,6-trinitro-m-xylene,” “Azodicarbonamide,” or “Isosorbide-5-mononitrate,” when offered for transportation or transported by rail, highway, or vessel, must conform to the general packaging requirements of subpart B of part 173, and to the requirements of part 178 of this subchapter at the Packing Group III performance level and may only be transported in the following packagings:\n\n(1) Fiberboard box (4G) with a single inner plastic bag, and a maximum net mass of not more than 50 kg (110 lbs).\n\n(2) Fiberboard box (4G) or fiber drum (1G), with a plastic inner packaging not exceeding 5 kg (11 lbs), and a maximum net mass of not more than 25 kg (55 lbs).\n\n(3) Fiber drum (1G), and a maximum net mass of not more than 50 kg (110 lbs), that may be fitted with a coating or lining.\n\n(b) [Reserved]\n\n[Doc. No. 2002-13658, 68 FR 45035, July 31, 2003; 75 FR 5394, Feb. 2, 2010]","truncated":false,"body_characters":925}