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United Nations/North American Number Datasheet

UN/NA 1067

 2.3 - Poisonous gas 5.1 - Oxidizer 8 - Corrosive

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.

Material Names

  • Dinitrogen tetroxide
  • Nitrogen dioxide
 ERG book cover

Response Guide 124

Gases - Toxic and/or Corrosive - Oxidizing Gases - Tóxicos y/o Corrosivos - Oxidantes Gaz - Toxiques et/ou Corrosifs - Oxydants

 

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
Dinitrogen tetroxide 100 ft 0.1 mi 0.3 mi 1250 ft 0.9 mi 2.1 mi
Nitrogen dioxide 100 ft 0.1 mi 0.3 mi 1250 ft 0.9 mi 2.1 mi

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

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 Dinitrogen tetroxide 2.3 2.3, 5.1, 8 Inhalation Hazard Zone A

  2.3 - Poisonous gas

  5.1 - Oxidizer

  8 - Corrosive