UN 3473Fuel cell cartridges, or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment, containing flammable liquids
Proper shipping name: Fuel cell cartridges or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment
Class 3
Flammable liquids
Summary
UN 3473 is the UN number for fuel cell cartridges, or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment, containing flammable liquids. It is classed in Class 3 (flammable liquids) for transport. Emergency responders use ERG guide 128.
Emergency response
The Emergency Response Guidebook (ERG2024) guide for this number:
- Guide128Fuel cell cartridges, containing flammable liquidsFuel cell cartridges contained in equipment, containing flammable liquidsFuel cell cartridges packed with equipment, containing flammable liquids
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 3473
- Name
- Fuel cell cartridges, or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment, containing flammable liquids
- Hazard class
- Class 3: Flammable liquids
- What the class covers
- Flammable liquids (and, in the U.S., combustible liquids).
U.S. Hazardous Materials Table
The entry for this number in 49 CFR 172.101.
UN3473Fuel cell cartridges or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment
containing flammable liquids
Special provisions: 328
- Class
- 3
- Packing group
- None
- Labels
- 3
From the eCFR edition of 49 CFR 172.101 dated 2026-10-05 (section last amended 2026-09-08). The eCFR is an editorial compilation, not the official legal edition. Read the current table.
About Class 3
Class 3 covers flammable liquids such as gasoline, diesel, solvents, paints and alcohols. In the United States, some liquids with higher flash points can also be shipped as combustible liquids under the same class.
Check the official sources
For emergency response, packaging and quantity limits, use these:
- CAMEO Chemicals: UN/NA 3473NOAA datasheets with the ERG response guide and isolation distances
- Emergency Response Guidebook (ERG)PHMSA's guide for first responders, free as a PDF or app
- 49 CFR 172.101 Hazardous Materials TableThe legal U.S. entry: proper shipping name, packing group, labels and special provisions