☣️ UN 3530 • CLASS 9
Machinery, internal combustion 3531 149P Polymerizing substance, solid, stabilized, n.o.s. 3532 149P Polymerizing substance, liquid, stabilized, n.o.s. 3533 150P Polymerizing substance, solid, temperature controlled, n.o.s. 3534 150P Polymerizing substance, liquid, temperature controlled, n.o.s.
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 3530
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 3530 — Machinery, internal combustion 3531 149P Polymerizing substance, solid, stabilized, n.o.s. 3532 149P Polymerizing substance, liquid, stabilized, n.o.s. 3533 150P Polymerizing substance, solid, temperature controlled, n.o.s. 3534 150P Polymerizing substance, liquid, temperature controlled, n.o.s. 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.