UNunnums
3493

UN 3493Toxic by inhalation liquid, corrosive, flammable, N.O.S. with an inhalation toxicity lower than or equal to 1000 ml/m3 and saturated vapour concentration greater than or equal to 10 LC50

Division 6.1

Toxic substances

Summary

UN 3493 is the UN number for toxic by inhalation liquid, corrosive, flammable, N.O.S. with an inhalation toxicity lower than or equal to 1000 ml/m3 and saturated vapour concentration greater than or equal to 10 LC50. It is classed in Division 6.1 (toxic substances) of Class 6 for transport. Emergency responders use ERG guide 131.

Emergency response

The Emergency Response Guidebook (ERG2024) guide for this number:

  • Guide131Poisonous by inhalation liquid, corrosive, flammable, n.o.s. (Inhalation Hazard Zone B)Toxic by inhalation liquid, corrosive, flammable, n.o.s. (Inhalation Hazard Zone B)Highlighted in green: see Table 1

Highlighted in green in the ERG. If there is no fire, go to ERG Table 1 for initial isolation and protective action distances, and also use the guide. If a fire is involved, use the guide's evacuation distances and protect downwind according to Table 1.

From the 2024 Emergency Response Guidebook (ERG2024), published by U.S. Department of Transportation, PHMSA. Read the full guide in the ERG or on CAMEO Chemicals.

Identification

UN number
UN 3493
Name
Toxic by inhalation liquid, corrosive, flammable, N.O.S. with an inhalation toxicity lower than or equal to 1000 ml/m3 and saturated vapour concentration greater than or equal to 10 LC50
Hazard class
Class 6: Toxic and infectious substances
Division
6.1: Toxic substances
What the class covers
Substances liable to cause death, serious injury or harm to health if swallowed, inhaled or absorbed through the skin.

About Class 6

Class 6 covers poisons and infectious material. Division 6.1 is toxic substances that harm people if swallowed, inhaled or absorbed through the skin; 6.2 is infectious substances such as cultures and medical waste.

See all Class 6 UN numbers

Check the official sources

For emergency response, packaging and quantity limits, use these: