UN 0325 — Igniters
Placard: Explosive 1.4G. ERG Guide 114. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0325 is Igniters, a Class 1.4 explosive article assigned to ERG Guide 114. It presents a limited fire or minor blast hazard, but responders still need isolation, smoke protection and shipment verification.
Hazard overview: UN 0325 presents a localized initiator hazard. Heat, impact, friction, static, electrical energy or mechanical disturbance may cause popping, deflagration or small blast effects, and grouped articles can still injure nearby personnel.
Response guidance: For a UN 0325 incident, responders should confirm the article using shipping papers, markings and ERG Guide 114. Isolate the area, avoid disturbing leads or damaged units, control ignition and static sources when safe, and request explosive specialists if condition or quantity is uncertain.
Firefighter training notes: Training should emphasize the difference between 1.4 limited-effect explosives and higher-hazard Class 1 materials. Common errors include standing too close to heated packages, dismissing smoke hazards and failing to check for adjacent explosives or ammunition.
Regulatory context: Igniters is regulated as a Class 1 explosive article for transportation. Storage, quantity limits, fire code controls and reporting requirements may vary by jurisdiction. Responders should verify current requirements through shipping papers, product documents and applicable DOT, ATF, OSHA, NFPA or local authority guidance.
Storage & handling: Igniters should be stored in compatible packaging away from heat, sparks, open flame, impact and unauthorized access. Keep separated from incompatible explosives, propellants and combustible clutter according to product instructions and local fire code.
UN 0325 Quick Details
Common Hazards of UN 0325
- Minor explosive hazard with localized blast, popping or fragment effects possible if initiated.
- Detonators, primers, fuzes or igniters may be sensitive to heat, impact, friction, static or electrical energy depending on design.
- Smoke and heat from burning articles may irritate the eyes and respiratory tract.
- Low mass explosion risk under normal transport conditions, but grouped articles can still injure nearby personnel.
- Heated packages may fail and scatter small articles or fragments.
- Nearby explosives, ammunition or pyrotechnics may increase the overall incident hazard.
Chemical Identity & Physical Properties
Small devices containing pyrotechnic compositions, typically metal or plastic casings with initiating elements. May contain powder or solid propellant material designed to initiate combustion.
| Also known as | Igniter assembliesIgnition devicesPyrotechnic ignitersExplosive igniters |
| Appearance | Small devices containing pyrotechnic compositions, typically metal or plastic casings with initiating elements. May contain powder or solid propellant material designed to initiate combustion. |
| Flash Point | Not applicable (explosive article) |
| Boiling Point | Not applicable (explosive article) |
| Vapor Density | Not applicable (solid article) |
| Water Reactivity | Minimal reaction with water; may lose effectiveness if wetted |
Fireground Response Guidance — UN 0325
Extinguishing Media
PPE Requirements
Structural firefighting protective clothing with SCBA is appropriate for fire or smoke exposure, with distance maintained from heated packages. Approach and handling should follow incident command and local SOP.
Isolation & Evacuation
First Actions for a UN 0325 Incident
- CALL 911. Notify law enforcement if ammunition components, explosive articles or ordnance are involved.
- Keep unauthorized personnel away.
- Stage upwind and avoid smoke from burning articles.
- Avoid radios, static sources, electrical leads or mechanical disturbance around suspected initiators unless cleared by specialists.
- Eliminate ignition sources if it is safe to do so.
- Isolate the area and expand the perimeter if fire grows or additional explosives are present.
- Use ERG Guide 114, shipping papers and incident command for isolation and fire response decisions.
📋 Copy & Share Field Card
UN 0325 — IgnitersUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.