UN 20: Ammunition, toxic, non-explosive

DOT Classification and Shipping

UN 20 is assigned the proper shipping name Ammunition, toxic, non-explosive in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 6.1 Toxic Substance material. Required label(s): 6.1.

Packing group indicates the degree of danger within a hazard class: PG I is high danger, PG II medium, PG III low. The proper shipping name, hazard class, UN number, and packing group together form the basic shipping description that must appear on shipping papers and, where required, on the package and placard.

Emergency Response (ERG Guide 159)

Hazards: Irritating to eyes, skin, respiratory tract. Prolonged exposure may cause serious health effects.

Fire: Use agent appropriate for surrounding fire. Use water to keep containers cool.

Spill: Ventilate area. Use water spray to knock down vapors. Absorb with earth/sand.

Need the full interactive record? Open UN 20 in the SpillNerd lookup tool for the live database entry with placard graphics, GHS pictograms, full segregation tables, and synonym search. For another material, use the UN number and chemical lookup.

Reference data compiled from the DOT Hazardous Materials Table (49 CFR 172.101), the 2024 Emergency Response Guidebook, and public chemical databases (PubChem, NIOSH, EPA). Always verify the correct shipping description against the current regulation and the manufacturer's SDS Section 14 before shipping.