Hazora · Library
UN/NA 2742 · Chloroformates, poisonous, corrosive, flammable, n.o.s.
UN/NA 2742 · ERG 2024 · Guide 155
- UN/NA
- 2742
- Edition
- ERG 2024
ERG 2024 lists UN/NA 2742 (Chloroformates, poisonous, corrosive, flammable, n.o.s.) under Guide 155, titled “Substances - Toxic and/or Corrosive (Flammable/Water-Sensitive)”.
Material name
2742 on a placard, orange panel or shipping paper
It can stand for either of two ERG 2024 entries: “Chloroformates, poisonous, corrosive, flammable, n.o.s.” and “Chloroformates, toxic, corrosive, flammable, n.o.s.”. Both use Guide 155, so the number alone is enough to find the guide. On a numbered orange panel, 2742 is the lower number (how to read an orange panel).
ERG 2024 markings for 2742
2742 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has an entry for it: “Chloroformates, poisonous, corrosive, flammable, n.o.s.”. Hazora shows those distances in the app, not on this page. Its guide number 155 has no P.
Entries near 2742
By number (yellow pages): before 2742 come UN/NA 2739 Butyric anhydride (Guide 156); UN/NA 2740 n-Propyl chloroformate (Guide 155) and UN/NA 2741 Barium hypochlorite, with more than 22% available chlorine (Guide 141); after it, UN/NA 2743 n-Butyl chloroformate (Guide 155); UN/NA 2744 Cyclobutyl chloroformate (Guide 155) and UN/NA 2745 Chloromethyl chloroformate (Guide 157).
By name (blue pages): “Chloroformates, poisonous, corrosive, flammable, n.o.s.” comes after Chlorodinitrobenzenes, solid (UN/NA 3441, Guide 153) and Chloroform (UN/NA 1888, Guide 151) and before Chloroformates, poisonous, corrosive, n.o.s. (UN/NA 3277, Guide 154) and Chloroformates, toxic, corrosive, n.o.s. (UN/NA 3277, Guide 154).
By name (blue pages): “Chloroformates, toxic, corrosive, flammable, n.o.s.” comes after Chloroform (UN/NA 1888, Guide 151) and Chloroformates, poisonous, corrosive, n.o.s. (UN/NA 3277, Guide 154) and before Chloroformates, toxic, corrosive, n.o.s. (UN/NA 3277, Guide 154) and Chloromethyl chloroformate (UN/NA 2745, Guide 157).
Guide 155 · Library
Guide 155 covers 44 UN/NA numbers. The 12 around 2742 in the guide’s number order: UN/NA 2487 Phenyl isocyanate; UN/NA 2488 Cyclohexyl isocyanate; UN/NA 2589 Vinyl chloroacetate; UN/NA 2605 Methoxymethyl isocyanate; UN/NA 2606 Methyl orthosilicate; UN/NA 2740 n-Propyl chloroformate; UN/NA 2743 n-Butyl chloroformate; UN/NA 2744 Cyclobutyl 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 3080 Isocyanate solution, poisonous, flammable, n.o.s.
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.