UN 0066 — Cord, igniter
Placard: Explosive 1.3G. ERG Guide 112. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0066, known as Cord, Igniter, is a flexible pyrotechnic device classified as Explosive 1.3G that burns at a controlled rate to initiate other materials. It is transported and used in applications requiring reliable ignition sequencing, making proper emergency identification critical for first responders.
Hazard overview: UN 0066 presents a fire and burning hazard with intense heat output and the potential for fragment projection during deflagration. Although it does not pose a mass explosion risk, it can initiate adjacent pyrotechnic or explosive materials if burning is not controlled or suppressed.
Response guidance: First responders should immediately isolate the area 500 meters in all directions and expand evacuation to 1,600 meters if fire is involved, as burning fragments may travel considerable distances. Water spray may be used to cool exposures and nearby materials, while dry chemical or CO2 are also acceptable extinguishing agents.
UN 0066 Quick Details
Common Hazards of UN 0066
- Fire and burning hazard — not mass explosion.
- Intense heat and possible fragment projection.
- May deflagrate and initiate other materials.
- Smoke and toxic combustion products.
Chemical Identity & Physical Properties
UN 0066 appears as a flexible cord or tube containing pyrotechnic composition, typically gray or black in color, that burns with an intense flame at a controlled rate.
| Also known as | igniter cordsafety fusepyrotechnic ignition corddetonating cord igniter |
| Appearance | Flexible cord or tube containing pyrotechnic composition, typically gray or black in color. Burns with intense flame and heat at controlled rate. |
| Flash Point | Not applicable (pyrotechnic device) |
| Boiling Point | Not applicable (pyrotechnic device) |
| Vapor Density | Not applicable (solid pyrotechnic) |
| Water Reactivity | No significant reaction with water, but composition may be moisture-sensitive |
Fireground Response Guidance — UN 0066
Extinguishing Media
PPE Requirements
Responders must wear Level B protection at minimum, including SCBA and full structural firefighter protective clothing, while maintaining maximum practical standoff distance during any fire involvement.
Isolation & Evacuation
First Actions for a UN 0066 Incident
- CALL 911. Then call emergency response telephone number on shipping paper.
- Isolate area; stage upwind — fire and fragment hazard.
- Request Hazmat + law enforcement.
- Control ignition sources; deny entry.
- Consult current ERG Guide 112 and follow SOP/SOG.
📋 Copy & Share Field Card
UN 0066 — Cord, igniterUse 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.