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Toxic Substances
Marine-pollutant mark (§172.322) required for bulk packages by vessel; IMDG segregation and stowage rules apply.
Class 6.1 — Toxic (poison). Liable to cause death or serious injury if swallowed, inhaled or absorbed through skin (49 CFR §173.132). Packing Group I — great danger.
Hazard class 6.1, Packing Group I. Placard/label codes: 6.1. Special provisions: 14, B9, B90, T14, TP2, TP13. Packaging (49 CFR §173): exceptions §None, non-bulk §201, bulk §244. Quantity limits: passenger aircraft/rail Forbidden, cargo aircraft only 30 L. Vessel stowage: D (other: 25, 40). Classified per 49 CFR §172.101.
Regulatory data mirrors the U.S. 49 CFR §172.101 Hazardous Materials Table and companion columns (packaging, quantity limits, vessel stowage, special provisions) as published by the U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA).
Emergency-response content is drawn from the 2024 Emergency Response Guidebook (ERG), a joint publication of PHMSA, Transport Canada, and Mexico’s SCT.
The U.S. edition of the ERG and all U.S. federal regulations are public-domain works under 17 U.S.C. §105. Descriptions on this page are plain-English paraphrases; for any compliance decision, consult the authoritative text on eCFR Title 49 and the ERG at PHMSA.dot.gov. “ERG™” is attributed to PHMSA / Transport Canada / SCT and used nominatively.