UN 0070 — Cartridges, signal
Placard: Explosive 1.4G. ERG Guide 114. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
Signal cartridges are pyrotechnic devices used to produce colored smoke or light for signaling purposes. They can be hazardous if not handled properly, and require careful storage and use.
Hazard overview: Signal cartridges pose a deflagration hazard, and can cause projectile and fire hazards if ignited. They can also produce colored smoke or light, which can be hazardous if inhaled or if it ignites nearby flammable materials.
Response guidance: In the event of a signal cartridge emergency, responders should evacuate the area immediately and establish a safe perimeter. Firefighters should wear Level D minimum PPE during handling, and Level C with SCBA if fire or deflagration occurs, protecting against projectiles.
UN 0070 Quick Details
Common Hazards of UN 0070
- Deflagration hazard
- Projectile and fire hazard
- May initiate secondary fires
Chemical Identity & Physical Properties
Signal cartridges are cylindrical metal or plastic cartridges containing pyrotechnic compositions, typically colored powders, and may produce colored smoke or light when activated.
| Also known as | Signal cartridgesPyrotechnic signal devicesFlare cartridgesDistress signal cartridges |
| Appearance | Cylindrical metal or plastic cartridges containing pyrotechnic compositions, typically colored powders. May produce colored smoke or light when activated. |
| Flash Point | Not applicable (pyrotechnic device) |
| Boiling Point | Not applicable (pyrotechnic device) |
| Vapor Density | Not applicable (solid pyrotechnic) |
| Water Reactivity | May contain water-reactive compounds; avoid immersion |
Fireground Response Guidance — UN 0070
Extinguishing Media
PPE Requirements
Responders should wear Level D minimum PPE during handling, and Level C with SCBA if fire or deflagration occurs, protecting against projectiles.
Isolation & Evacuation
First Actions for a UN 0070 Incident
- CALL 911. Notify law enforcement.
- Isolate area; keep unauthorized personnel away
- Stage upwind; no ignition sources
- Request Hazmat + law enforcement
- Consult current ERG Guide 114 and SOP/SOG
📋 Copy & Share Field Card
UN 0070 — Cartridges, signalUse 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.