United Nations/North American Number Datasheet

UN/NA 1589

2.3 - Poisonous gas 8 - Corrosive

Emergency Response Guidebook (ERG, 2020)

Material Names

  • Cyanogen chloride, stabilized
ERG book cover

Response Guide 125

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


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)
in all Directions
Then Protect Downwind First
in all Directions
Then Protect Downwind
Day Night Day Night
Cyanogen chloride, stabilized 1000 ft 1.2 mi 4.0 mi 3000 ft 6.0 mi 7.0+ mi
"+" means distance can be larger in certain atmospheric conditions.

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 Cyanogen chloride, stabilized 2.3 2.3, 8 Inhalation Hazard Zone A

  2.3 - Poisonous gas

  8 - Corrosive