☣️ UN 0196 • CLASS 1
Signals, smoke
Placard: Explosive 1.1G. 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.
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Quick details
UN 0196
Class: 1
Placard type: Explosive 1.1G
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: isolate 500m (1600 ft) all directions; if fire or cargo involved in fire, evacuate 1600m (1 mile) radius; mass explosion hazard requires maximum evacuation distances
Chemical & Response Details
| Also known as | Smoke signalsPyrotechnic smoke signalsMarine smoke signalsDistress smoke signalsSignal flares (smoke type) |
| Appearance | Solid pyrotechnic devices typically in cylindrical or canister form, containing chemical mixtures that produce colored smoke when ignited. May be red, orange, white, or other colors depending on formulation. |
| Flash Point | Not applicable (pyrotechnic composition) |
| Boiling Point | Not applicable (pyrotechnic composition) |
| Vapor Density | Not applicable (solid pyrotechnic device) |
| Water Reactivity | May contain water-reactive components; keep dry to prevent degradation or unintended ignition |
| Extinguishing | Do not use water or foam; use dry sand or earth to smother; fight fire from maximum distance |
| PPE | ⚠️ Level B minimum with SCBA required; full protective clothing due to explosion and fragmentation hazard; maintain safe distance |
| Isolation | ERG 112: isolate 500m (1600 ft) all directions; if fire or cargo involved in fire, evacuate 1600m (1 mile) radius; mass explosion hazard requires maximum evacuation distances |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Mass explosion hazard — entire load may detonate simultaneously.
- Severe blast overpressure and fragmentation.
- Sensitive to heat, shock, and friction.
- Secondary fire and debris hazard.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper.
- Establish large isolation zone — minimum 500 meters in all directions.
- Stage upwind, uphill; limit personnel to essential responders only.
- Request Hazmat + law enforcement + additional resources immediately.
- Do not fight fire — evacuate and isolate; let burn if no life safety risk.
- Protect exposures only if safe and directed by command.
- Consult current ERG Guide 112 and follow SOP/SOG.
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UN 0196 — Signals, smoke HAZMAT RADIO NOTE — UN 0196
Product: Signals, smoke
Class 1 / Explosive 1.1G / ERG 112
PPE: Level B minimum with SCBA required; full protective clothing due to explosion and fragmentation hazard; maintain safe distance
ISOLATION: ERG 112: isolate 500m (1600 ft) all directions; if fire or cargo involved in fire, evacuate 1600m (1 mile) radius; mass explosion hazard requires maximum evacuation distances
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 0196 — Signals, smoke
Class: 1 | Placard: Explosive 1.1G | ERG Guide: 112
Appearance: Solid pyrotechnic devices typically in cylindrical or canister form, containing chemical mixtures that produce colored smoke when ignited. May be red, orange, white, or other colors depending on formulation.
Water Reactivity: May contain water-reactive components; keep dry to prevent degradation or unintended ignition
Extinguishing: Do not use water or foam; use dry sand or earth to smother; fight fire from maximum distance
PPE: Level B minimum with SCBA required; full protective clothing due to explosion and fragmentation hazard; maintain safe distance
Isolation: ERG 112: isolate 500m (1600 ft) all directions; if fire or cargo involved in fire, evacuate 1600m (1 mile) radius; mass explosion hazard requires maximum evacuation distances
— Key Hazards —
• Mass explosion hazard — entire load may detonate simultaneously.
• Severe blast overpressure and fragmentation.
• Sensitive to heat, shock, and friction.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper.
• Establish large isolation zone — minimum 500 meters in all directions.
• Stage upwind, uphill; limit personnel to essential responders only.
• Request Hazmat + law enforcement + additional resources immediately.
SOURCE: allfirefighter.com/hazmat/un/0196 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0196 Signals, smoke Cls1 ERG112 | ERG 112: isolate 500m (1600 ft) all directions; if fire or cargo involved in fir | allfirefighter.com/hazmat/un/0196SMS / 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/0196
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
Mass explosion hazard — entire load may detonate simultaneously. Severe blast overpressure and fragmentation. Sensitive to heat, shock, and friction. Secondary fire and debris hazard.
CALL 911. Then call emergency response telephone number on shipping paper. Establish large isolation zone — minimum 500 meters in all directions. Stage upwind, uphill; limit personnel to essential responders only.
Level B minimum with SCBA required; full protective clothing due to explosion and fragmentation hazard; maintain safe 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.