☣️ UN 0073 • CLASS 1
Detonators for ammunition
Placard: Explosive 1.1B. 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 0073
Class: 1
Placard type: Explosive 1.1B
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: isolate 500m all directions, evacuate 1600m if fire or large spill; mass explosion hazard requires maximum safe distance
Chemical & Response Details
| Also known as | blasting capselectric detonatorsexplosive initiatorspercussion capsprimer detonators |
| Appearance | Small metallic or plastic cylindrical devices containing primary explosives, typically silver, copper, or aluminum colored. Designed to initiate secondary explosives through percussion, electrical, or chemical means. |
| Flash Point | Not applicable (explosive device) |
| Boiling Point | Not applicable (explosive device) |
| Vapor Density | Not applicable (solid device) |
| Water Reactivity | No significant reaction with water, but must be kept dry to prevent electrical malfunction or degradation |
| Extinguishing | Do not use water or foam; use dry sand or earth to cover; no direct firefighting |
| PPE | ⚠️ Evacuate area immediately; only trained explosive ordnance personnel should approach; SCBA and full protective equipment if unavoidable exposure |
| Isolation | ERG 112: isolate 500m all directions, evacuate 1600m if fire or large spill; mass explosion hazard requires maximum safe distance |
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 0073 — Detonators for ammunition HAZMAT RADIO NOTE — UN 0073
Product: Detonators for ammunition
Class 1 / Explosive 1.1B / ERG 112
PPE: Evacuate area immediately; only trained explosive ordnance personnel should approach; SCBA and full protective equipment if unavoidable exposure
ISOLATION: ERG 112: isolate 500m all directions, evacuate 1600m if fire or large spill; mass explosion hazard requires maximum safe distance
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 0073 — Detonators for ammunition
Class: 1 | Placard: Explosive 1.1B | ERG Guide: 112
Appearance: Small metallic or plastic cylindrical devices containing primary explosives, typically silver, copper, or aluminum colored. Designed to initiate secondary explosives through percussion, electrical, or chemical means.
Water Reactivity: No significant reaction with water, but must be kept dry to prevent electrical malfunction or degradation
Extinguishing: Do not use water or foam; use dry sand or earth to cover; no direct firefighting
PPE: Evacuate area immediately; only trained explosive ordnance personnel should approach; SCBA and full protective equipment if unavoidable exposure
Isolation: ERG 112: isolate 500m all directions, evacuate 1600m if fire or large spill; mass explosion hazard requires maximum safe distance
— 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/0073 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0073 Detonators for ammunition Cls1 ERG112 | allfirefighter.com/hazmat/un/0073SMS / 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/0073
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.
Evacuate area immediately; only trained explosive ordnance personnel should approach; SCBA and full protective equipment if unavoidable exposure
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.