☣️ UN 3509 • CLASS 9
Packagings discarded, empty, uncleaned
Placard: Miscellaneous. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ 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.
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Quick details
UN 3509
Class: 9
Placard type: Miscellaneous
ERG: Guide 171 (check current ERG)
Verify shipping papers and exact product details; use ERG Guide 171 for initial actions and isolation/evacuation guidance.
Common hazards (high level)
- Some may burn but none ignite readily.
- Containers may explode when heated.
- Some may be transported hot.
- For UN3508, Capacitor, asymmetric, be aware of possible short circuiting as this product is transported
- Polymeric beads, expandable (UN2211) may evolve flammable vapours.
- Inhalation of material may be harmful.
- Contact may cause burns to skin and eyes.
- Inhalation of Asbestos dust may have a damaging effect on the lungs.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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MAYDAY / HAZMAT QUICK NOTE UN 3509 — Packagings discarded, empty, uncleaned Class: 9 | Placard: Miscellaneous ERG: Guide 171 (check current ERG) FIRST ACTIONS: use SOP/SOG + ERG; stage upwind; isolate; deny entry; request Hazmat.
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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.