☣️ UN 3554 • CLASS 9
Gallium contained in manufactured articles
Placard: Miscellaneous. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ This page is a quick-reference aid. For real incidents: stage upwind, isolate, deny entry, request Hazmat early, and consult the current ERG + SOP/SOG.
Advertisement
Quick details
UN 3554
Class: 9
Placard type: Miscellaneous
ERG: Guide 172 (check current ERG)
Verify shipping papers and exact product details; use ERG Guide 172 for initial actions and isolation/evacuation guidance.
Common hazards (high level)
- Inhalation of vapors or contact with substance will result in contamination and potential harmful effects.
- Fire will produce irritating, corrosive and/or toxic gases.
- Non-combustible, substance itself does not burn but may react upon heating to produce corrosive
- Runoff may pollute waterways.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Stay upwind, uphill and/or upstream.
- Keep unauthorized personnel away.
- Isolate spill or leak area for at least 50 meters (150 feet) in all directions.
- Consider initial downwind evacuation for at least 100 meters (330 feet).
Copy / share note
MAYDAY / HAZMAT QUICK NOTE UN 3554 — Gallium contained in manufactured articles Class: 9 | Placard: Miscellaneous ERG: Guide 172 (check current ERG) FIRST ACTIONS: use SOP/SOG + ERG; stage upwind; isolate; deny entry; request Hazmat.
Advertisement
FAQ
A UN/NA number is a four-digit identifier used in transport markings and placards to help identify hazardous materials for emergency response.
No. This page is a training/quick-reference aid. Always consult the current ERG and follow your SOP/SOG for incident-specific protective actions.
Common locations include placards, orange panels, shipping papers, SDS documents, container markings, rail car/vehicle IDs, and facility signage.
Sources (high level): DOT/PHMSA marking & class concepts + ERG usage principles. This page does not reproduce ERG guide text—always consult the current ERG for incident-specific protective actions.