Hazora · Library
UN/NA 1238 · Methyl chloroformate
UN/NA 1238 · ERG 2024 · Guide 155
- UN/NA
- 1238
- Edition
- ERG 2024
ERG 2024 lists UN/NA 1238 (Methyl chloroformate) under Guide 155, titled “Substances - Toxic and/or Corrosive (Flammable/Water-Sensitive)”.
Material name
1238 on a placard, orange panel or shipping paper
It points to the ERG 2024 entry “Methyl chloroformate” and to Guide 155. On a numbered orange panel, 1238 is the lower number (how to read an orange panel).
ERG 2024 markings for 1238
1238 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has an entry for it: “Methyl chloroformate”. Hazora shows those distances in the app, not on this page. Its guide number 155 has no P.
Entries near 1238
By number (yellow pages): before 1238 come UN/NA 1234 Methylal (Guide 127); UN/NA 1235 Methylamine, aqueous solution (Guide 132) and UN/NA 1237 Methyl butyrate (Guide 129); after it, UN/NA 1239 Methyl chloromethyl ether (Guide 131); UN/NA 1242 Methyldichlorosilane (Guide 139) and UN/NA 1243 Methyl formate (Guide 129).
By name (blue pages): “Methyl chloroformate” comes after Methyl chloride and methylene chloride mixture (UN/NA 1912, Guide 115) and Methyl chloroacetate (UN/NA 2295, Guide 131) and before Methyl chloromethyl ether (UN/NA 1239, Guide 131) and Methyl dichloroacetate (UN/NA 2299, Guide 156).
Other names starting with “Methyl”: Methyl bromide and ethylene dibromide mixture, liquid (UN/NA 1647, Guide 151); Methyl bromoacetate (UN/NA 2643, Guide 153); Methyl chloride (UN/NA 1063, Guide 115); Methyl ethyl ether (UN/NA 1039, Guide 115); Methyl ethyl ketone (UN/NA 1193, Guide 127) and Methyl fluoride (UN/NA 2454, Guide 115).
Guide 155 · Library
Guide 155 covers 44 UN/NA numbers. The 12 around 1238 in the guide’s number order: UN/NA 1162 Dimethyldichlorosilane; UN/NA 1181 Ethyl chloroacetate; UN/NA 1182 Ethyl chloroformate; UN/NA 1196 Ethyltrichlorosilane; UN/NA 1250 Methyltrichlorosilane; UN/NA 1298 Trimethylchlorosilane; UN/NA 1305 Vinyltrichlorosilane; UN/NA 1603 Ethyl bromoacetate; UN/NA 1717 Acetyl chloride; UN/NA 1722 Allyl chlorocarbonate; UN/NA 3490 Poisonous by inhalation liquid, water-reactive, flammable, n.o.s. (Inhalation Hazard Zone A); UN/NA 3491 Poisonous by inhalation liquid, water-reactive, flammable, n.o.s. (Inhalation Hazard Zone B).
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.