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United Nations/North American Number Datasheet

UN/NA 1040

 2.3 - Poisonous gas 2.1 - Flammable gas

Emergency Response Guidebook (ERG, 2024)

A caution icon. The ERG recommendations are developed for use during the initial phase of transportation incidents; they are not intended for spills at facilities.

Polymerizable warning Materials may undergo violent polymerization if subjected to heat or contamination.

Material Names

  • Ethylene oxide
  • Ethylene oxide with nitrogen
 ERG book cover

Response Guide 119

Gases - Toxic - Flammable Gases - Tóxicos - Inflamables Gaz - Toxiques - Inflammables

 

ERG Table 1: Initial Isolation and Protective Action Distances

Name of Material Small Spills
(from a small package or small leak)		 Large Spills
(from a large package or many small packages)
First
Isolate
in all Directions		 Then Protect Downwind First
Isolate
in all Directions		 Then Protect Downwind
Day Night Day Night
Ethylene oxide 100 ft 0.1 mi 0.2 mi Refer to Table 3
Ethylene oxide with nitrogen 100 ft 0.1 mi 0.2 mi Refer to Table 3

The ERG doesn't predict that large amounts of toxic-by-inhalation gases will be produced if this material is spilled in water.

ERG Table 3: Initial Isolation and Protective Action Distances for Different Quantities of Six Common Toxic-by-Inhalation Gases

UN1040 Ethylene oxide: Large Spills UN1040 Ethylene oxide with nitrogen: Large Spills
Transport Container First
Isolate
in all Directions		 Then Protect Downwind
Day Night
Low Wind
(<6 mph)		 Moderate Wind
(6-12 mph)		 High Wind
(>12 mph)		 Low Wind
(<6 mph)		 Moderate Wind
(6-12 mph)		 High Wind
(>12 mph)
Rail tank car 600 ft 1.0 mi 0.5 mi 0.4 mi 1.8 mi 0.9 mi 0.5 mi
Highway tank truck or trailer 300 ft 0.6 mi 0.3 mi 0.3 mi 1.3 mi 0.4 mi 0.3 mi
Multiple small cylinders or single ton cylinder 100 ft 0.3 mi 0.1 mi 0.1 mi 0.5 mi 0.2 mi 0.1 mi

Hazmat Table (49 CFR 172.101)

UN/NA Proper Shipping Name Hazard Class Labels Notes*

* There are three notes: (1) whether the displayed information is for domestic (U.S.) or international shipping (if neither is specifically indicated, it applies to both), (2) whether the proper shipping name must include one or more technical names of the hazardous material in parentheses, and (3) whether the hazardous material is an inhalation hazard.
UN Ethylene oxide or Ethylene oxide with nitrogen up to a total pressure of 1 MPa (10 bar) at 50 degrees C 2.3 2.3, 2.1 Inhalation Hazard Zone D

  2.3 - Poisonous gas

  2.1 - Flammable gas