Guide 155 · ERG 2024

Guides

155

UN/NA

44

Edition

ERG 2024

In ERG 2024, Guide 155 is titled “Substances - Toxic and/or Corrosive (Flammable/Water-Sensitive)”.

Guide 155 covers 44 UN/NA numbers and 55 material names in ERG 2024. 6 of them carry the letter P (155P), which marks a material that may undergo violent polymerization: UN/NA 1305 (Vinyltrichlorosilane); UN/NA 2480 (Methyl isocyanate); UN/NA 2482 (n-Propyl isocyanate); UN/NA 2483 (Isopropyl isocyanate); UN/NA 2485 (n-Butyl isocyanate) and UN/NA 2486 (Isobutyl isocyanate). 39 are highlighted in green and listed in Table 1: UN/NA 1162 (Dimethyldichlorosilane); UN/NA 1182 (Ethyl chloroformate); UN/NA 1196 (Ethyltrichlorosilane); UN/NA 1238 (Methyl chloroformate); UN/NA 1250 (Methyltrichlorosilane); UN/NA 1298 (Trimethylchlorosilane); UN/NA 1305 (Vinyltrichlorosilane); UN/NA 1717 (Acetyl chloride); UN/NA 1722 (Allyl chlorocarbonate); UN/NA 1724 (Allyltrichlorosilane, stabilized); UN/NA 1747 (Butyltrichlorosilane); UN/NA 1767 (Diethyldichlorosilane); UN/NA 1815 (Propionyl chloride); UN/NA 1816 (Propyltrichlorosilane); UN/NA 2285 (Isocyanatobenzotrifluorides); UN/NA 2353 (Butyryl chloride); UN/NA 2395 (Isobutyryl chloride); UN/NA 2407 (Isopropyl chloroformate); UN/NA 2478 (Isocyanate solution, flammable, poisonous, n.o.s.); UN/NA 2480 (Methyl isocyanate); UN/NA 2481 (Ethyl isocyanate); UN/NA 2482 (n-Propyl isocyanate); UN/NA 2483 (Isopropyl isocyanate); UN/NA 2484 (tert-Butyl isocyanate); UN/NA 2485 (n-Butyl isocyanate); UN/NA 2486 (Isobutyl isocyanate); UN/NA 2487 (Phenyl isocyanate); UN/NA 2488 (Cyclohexyl isocyanate); UN/NA 2605 (Methoxymethyl isocyanate); UN/NA 2606 (Methyl orthosilicate); UN/NA 2740 (n-Propyl chloroformate); UN/NA 2742 (Chloroformates, poisonous, corrosive, flammable, n.o.s.); UN/NA 2743 (n-Butyl chloroformate); UN/NA 2826 (Ethyl chlorothioformate); UN/NA 2985 (Chlorosilanes, flammable, corrosive, n.o.s.); UN/NA 2986 (Chlorosilanes, corrosive, flammable, n.o.s.); UN/NA 3362 (Chlorosilanes, poisonous, corrosive, flammable, n.o.s.); UN/NA 3490 (Poisonous by inhalation liquid, water-reactive, flammable, n.o.s. (Inhalation Hazard Zone A)) and UN/NA 3491 (Poisonous by inhalation liquid, water-reactive, flammable, n.o.s. (Inhalation Hazard Zone B)). 16 appear in Table 2 as water-reactive materials that produce toxic gases: UN/NA 1162 (Dimethyldichlorosilane: HCl); UN/NA 1196 (Ethyltrichlorosilane: HCl); UN/NA 1250 (Methyltrichlorosilane: HCl); UN/NA 1298 (Trimethylchlorosilane: HCl); UN/NA 1305 (Vinyltrichlorosilane: HCl); UN/NA 1717 (Acetyl chloride: HCl); UN/NA 1724 (Allyltrichlorosilane, stabilized: HCl); UN/NA 1747 (Butyltrichlorosilane: HCl); UN/NA 1767 (Diethyldichlorosilane: HCl); UN/NA 1815 (Propionyl chloride: HCl); UN/NA 1816 (Propyltrichlorosilane: HCl); UN/NA 2353 (Butyryl chloride: HCl); UN/NA 2395 (Isobutyryl chloride: HCl); UN/NA 2985 (Chlorosilanes, flammable, corrosive, n.o.s.: HCl); UN/NA 2986 (Chlorosilanes, corrosive, flammable, n.o.s.: HCl) and UN/NA 3362 (Chlorosilanes, poisonous, corrosive, flammable, n.o.s.: HCl).

The Spanish edition (GRE 2024) titles this guide “Sustancias - Tóxicas y/o Corrosivas (inflamables / susceptibles al agua)”, and the French edition (GMU 2024) “Substances - Toxiques et/ou Corrosives (inflammables/sensibles à l’eau)”.

Source: ERG 2024 (U.S. DOT PHMSA, Transport Canada, SICT Mexico), for the initial phase of a transportation incident only. Hazora is not an official ERG publication and is not affiliated with or endorsed by these or any other government agencies.