☣️ UN 0334 • CLASS 1
Fireworks
Placard: Explosive 1.2G. 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 0334
Class: 1
Placard type: Explosive 1.2G
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: isolate 500m (1600 ft) in all directions; if fire or explosion involved, evacuate 1600m (1 mile) in all directions; do not approach burning fireworks; fight fire from maximum distance or unmanned hose holders.
Chemical & Response Details
| Also known as | pyrotechnicspyrotechnic articlesexplosive fireworksdisplay fireworksconsumer fireworksfirecrackers |
| Appearance | Solid articles containing pyrotechnic compositions of various colors; typically cardboard tubes, shells, or devices filled with explosive powders, oxidizers, and metallic fuels; may produce colored flames, sparks, smoke, or noise upon ignition. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (explosive solid) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Generally stable in water, but some pyrotechnic compositions may react with water producing flammable gases or heat; avoid water application on burning fireworks as it may spread burning materials. |
| Extinguishing | Do not use water or foam; flooding quantities of water from unmanned hose may be effective at distance; dry sand or earth for small fires if explosives are not involved. |
| PPE | ⚠️ Level B minimum for non-fire scenarios; structural firefighter turnout gear with SCBA for fire operations; maintain maximum safe distance; explosion risk requires substantial standoff distance. |
| Isolation | ERG 112: isolate 500m (1600 ft) in all directions; if fire or explosion involved, evacuate 1600m (1 mile) in all directions; do not approach burning fireworks; fight fire from maximum distance or unmanned hose holders. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Projection and fragmentation hazard on initiation.
- Blast overpressure in immediate area.
- Sensitive to heat, shock, or electrical current.
- May initiate other explosives in proximity.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper.
- Isolate minimum 500 meters; stage upwind and uphill.
- Request Hazmat + law enforcement immediately.
- Control ignition sources; deny unauthorized entry.
- Do not approach — projectile/fragmentation hazard.
- Consult current ERG Guide 112 and follow SOP/SOG.
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UN 0334 — Fireworks HAZMAT RADIO NOTE — UN 0334
Product: Fireworks
Class 1 / Explosive 1.2G / ERG 112
PPE: Level B minimum for non-fire scenarios; structural firefighter turnout gear with SCBA for fire operations; maintain maximum safe distance; explosion risk requires substantial standoff distance.
ISOLATION: ERG 112: isolate 500m (1600 ft) in all directions; if fire or explosion involved, evacuate 1600m (1 mile) in all directions; do not approach burning fireworks; fight fire from maximum distance or unmanned hose holders.
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 0334 — Fireworks
Class: 1 | Placard: Explosive 1.2G | ERG Guide: 112
Appearance: Solid articles containing pyrotechnic compositions of various colors; typically cardboard tubes, shells, or devices filled with explosive powders, oxidizers, and metallic fuels; may produce colored flames, sparks, smoke, or noise upon ignition.
Water Reactivity: Generally stable in water, but some pyrotechnic compositions may react with water producing flammable gases or heat; avoid water application on burning fireworks as it may spread burning materials.
Extinguishing: Do not use water or foam; flooding quantities of water from unmanned hose may be effective at distance; dry sand or earth for small fires if explosives are not involved.
PPE: Level B minimum for non-fire scenarios; structural firefighter turnout gear with SCBA for fire operations; maintain maximum safe distance; explosion risk requires substantial standoff distance.
Isolation: ERG 112: isolate 500m (1600 ft) in all directions; if fire or explosion involved, evacuate 1600m (1 mile) in all directions; do not approach burning fireworks; fight fire from maximum distance or unmanned hose holders.
— Key Hazards —
• Projection and fragmentation hazard on initiation.
• Blast overpressure in immediate area.
• Sensitive to heat, shock, or electrical current.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper.
• Isolate minimum 500 meters; stage upwind and uphill.
• Request Hazmat + law enforcement immediately.
• Control ignition sources; deny unauthorized entry.
SOURCE: allfirefighter.com/hazmat/un/0334 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0334 Fireworks Cls1 ERG112 | ERG 112: isolate 500m (1600 ft) in all directions; if fire or explosion involved | allfirefighter.com/hazmat/un/0334SMS / 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/0334
Related UN numbers (same class)
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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FAQ
Projection and fragmentation hazard on initiation. Blast overpressure in immediate area. Sensitive to heat, shock, or electrical current. May initiate other explosives in proximity.
CALL 911. Then call emergency response telephone number on shipping paper. Isolate minimum 500 meters; stage upwind and uphill. Request Hazmat + law enforcement immediately.
Level B minimum for non-fire scenarios; structural firefighter turnout gear with SCBA for fire operations; maintain maximum safe distance; explosion risk requires substantial standoff distance.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 112 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.