☣️ UN 0337 • CLASS 1
UN 0337 — Fireworks
Placard: Explosive 1.4S. ERG Guide 114. 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
UN 0337 Quick Details
UN 0337
Product name: Fireworks
DOT Class: 1
Placard type: Explosive 1.4S
ERG Guide: 114 (check current ERG)
Initial isolation: ERG 114: Initial isolation 200 feet all directions; if fire or large spill, isolate 1000 feet and evacuate 0.5 mile radius
Common Hazards of UN 0337
- Minor blast or fire hazard — limited effect.
- Localized burning or deflagration possible.
- Smoke and heat from burning.
- Low mass explosion risk under normal conditions.
Chemical Identity & Physical Properties
| Also known as | PyrotechnicsPyrotechnic devicesFirework articlesConsumer fireworksDisplay fireworksAerial shells |
| Appearance | Solid articles containing pyrotechnic compositions, typically colorful paper or cardboard tubes filled with chemical mixtures. Colors vary widely (red, green, blue, white). May emit characteristic sulfur or gunpowder odor. |
| Flash Point | Not applicable (solid explosive article) |
| Boiling Point | Not applicable (solid explosive article) |
| Vapor Density | Not applicable (solid explosive article) |
| Water Reactivity | No significant reaction with water; water is primary extinguishing agent for fires involving UN 0337 fireworks |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 0337
Extinguishing Media
Water spray or fog preferred; foam, dry chemical, or CO2 acceptable for small fires
PPE Requirements
⚠️ Full structural firefighting turnout gear with SCBA; maintain distance due to blast/projectile hazard; minimum Level D for handling intact articles
Isolation & Evacuation
ERG 114: Initial isolation 200 feet all directions; if fire or large spill, isolate 1000 feet and evacuate 0.5 mile radius
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 114).
First Actions for a UN 0337 Incident
- CALL 911. Notify law enforcement.
- Isolate area; keep unauthorized personnel away.
- Stage upwind; eliminate ignition sources.
- Request Hazmat + law enforcement.
- Consult current ERG Guide 114 and follow SOP/SOG.
Advertisement
📋 Copy & Share Field Card
UN 0337 — FireworksHAZMAT RADIO NOTE — UN 0337
Product: Fireworks
Class 1 / Explosive 1.4S / ERG 114
PPE: Full structural firefighting turnout gear with SCBA; maintain distance due to blast/projectile hazard; minimum Level D for handling intact articles
ISOLATION: ERG 114: Initial isolation 200 feet all directions; if fire or large spill, isolate 1000 feet and evacuate 0.5 mile radius
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 0337 — Fireworks
Class: 1 | Placard: Explosive 1.4S | ERG Guide: 114
Appearance: Solid articles containing pyrotechnic compositions, typically colorful paper or cardboard tubes filled with chemical mixtures. Colors vary widely (red, green, blue, white). May emit characteristic sulfur or gunpowder odor.
Water Reactivity: No significant reaction with water; water is primary extinguishing agent for fires involving UN 0337 fireworks
Extinguishing: Water spray or fog preferred; foam, dry chemical, or CO2 acceptable for small fires
PPE: Full structural firefighting turnout gear with SCBA; maintain distance due to blast/projectile hazard; minimum Level D for handling intact articles
Isolation: ERG 114: Initial isolation 200 feet all directions; if fire or large spill, isolate 1000 feet and evacuate 0.5 mile radius
— Key Hazards —
• Minor blast or fire hazard — limited effect.
• Localized burning or deflagration possible.
• Smoke and heat from burning.
— First Actions —
• CALL 911. Notify law enforcement.
• Isolate area; keep unauthorized personnel away.
• Stage upwind; eliminate ignition sources.
• Request Hazmat + law enforcement.
SOURCE: allfirefighter.com/hazmat/un/0337 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0337 Fireworks Cls1 ERG114 | ERG 114: Initial isolation 200 feet all directions; if fire or large spill, isol | allfirefighter.com/hazmat/un/0337SMS / 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/0337
Related UN Numbers in Class 1
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
Advertisement
Frequently Asked Questions about UN 0337
Minor blast or fire hazard — limited effect. Localized burning or deflagration possible. Smoke and heat from burning. Low mass explosion risk under normal conditions.
CALL 911. Notify law enforcement. Isolate area; keep unauthorized personnel away. Stage upwind; eliminate ignition sources.
Full structural firefighting turnout gear with SCBA; maintain distance due to blast/projectile hazard; minimum Level D for handling intact articles
Water reactivity: No significant reaction with water; water is primary extinguishing agent for fires involving UN 0337 fireworks. Recommended extinguishing: Water spray or fog preferred; foam, dry chemical, or CO2 acceptable for small fires.
ERG Guide 114 recommendation: ERG 114: Initial isolation 200 feet all directions; if fire or large spill, isolate 1000 feet and evacuate 0.5 mile radius
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 114 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.