☣️ UN 3334 • CLASS 9
Self-defense spray, nonpressurized
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 3334
Class: 9
Placard type: Miscellaneous
ERG: Guide 171 (check current ERG)
Isolation: ERG 171: No evacuation distances specified for small spills; isolate area and deny entry; ventilate closed spaces before entry
Chemical & Response Details
| Also known as | pepper sprayOC sprayoleoresin capsicum spraymacepersonal defense spray |
| Appearance | Liquid aerosol product containing capsaicin or related irritants, typically orange to reddish-brown in color with a pungent odor, liquid at room temperature. |
| Flash Point | Varies by formulation, typically >93C (>200F) for oleoresin capsicum solutions |
| Boiling Point | Not applicable (mixture with varying components) |
| Vapor Density | Not applicable (non-volatile liquid mixture) |
| Water Reactivity | No significant reaction with water |
| Extinguishing | Water fog, CO2, dry chemical, or foam suitable for extinguishing |
| PPE | ⚠️ Level D minimum for handling; avoid contact with skin and eyes; respiratory protection recommended if aerosol is released; decontamination with soap and water |
| Isolation | ERG 171: No evacuation distances specified for small spills; isolate area and deny entry; ventilate closed spaces before entry |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
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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UN 3334 — Self-defense spray, nonpressurized HAZMAT RADIO NOTE — UN 3334
Product: Self-defense spray, nonpressurized
Class 9 / Miscellaneous / ERG 171
PPE: Level D minimum for handling; avoid contact with skin and eyes; respiratory protection recommended if aerosol is released; decontamination with soap and water
ISOLATION: ERG 171: No evacuation distances specified for small spills; isolate area and deny entry; ventilate closed spaces before entry
ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO
Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
=== IC HAZMAT BRIEFING ===
UN 3334 — Self-defense spray, nonpressurized
Class: 9 | Placard: Miscellaneous | ERG Guide: 171
Appearance: Liquid aerosol product containing capsaicin or related irritants, typically orange to reddish-brown in color with a pungent odor, liquid at room temperature.
Water Reactivity: No significant reaction with water
Extinguishing: Water fog, CO2, dry chemical, or foam suitable for extinguishing
PPE: Level D minimum for handling; avoid contact with skin and eyes; respiratory protection recommended if aerosol is released; decontamination with soap and water
Isolation: ERG 171: No evacuation distances specified for small spills; isolate area and deny entry; ventilate closed spaces before entry
— Key Hazards —
• Some may burn but none ignite readily.
• Containers may explode when heated.
• Some may be transported hot.
— First Actions —
• 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
SOURCE: allfirefighter.com/hazmat/un/3334 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3334 Self-defense spray, nonpressurized Cls9 ERG171 | allfirefighter.com/hazmat/un/3334SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS. Includes link to full page.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/3334
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FAQ
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.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level D minimum for handling; avoid contact with skin and eyes; respiratory protection recommended if aerosol is released; decontamination with soap and water
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 171 and your department SOP/SOG for incident-specific protective actions.
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.