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United Nations/North American Number Datasheet

UN/NA 3049

Emergency Response Guidebook (ERG, 2016)

Material Names

  • Metal alkyl halides, water-reactive, n.o.s.
  • Metal aryl halides, water-reactive, n.o.s.
ERG book cover

Response Guide 138

Substances - Water-Reactive (Emitting Flammable Gases) Sustancias - Reactivas con el Agua (Emiten Gases Inflamables) Substances - Réagissant à l’Eau (Émettant des Gaz 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
Metal alkyl halides, water-reactive, n.o.s. (when spilled in water) 100 ft 0.1 mi 0.1 mi 200 ft 0.3 mi 0.8 mi
Metal aryl halides, water-reactive, n.o.s. (when spilled in water) 100 ft 0.1 mi 0.1 mi 200 ft 0.3 mi 0.8 mi

ERG Table 2: Water-Reactive Materials which Produce Toxic-By-Inhalation Gases

When spilled in water, large amounts of Hydrogen chloride (HCl) may be produced.

Hazmat Table (49 CFR 172.101)

Note: UN/NA 3049 doesn't appear in the 49 CFR Hazmat Table.