☣️ UN 0151 • CLASS 1
PETN; Penthrite
Placard: Explosive 1.1D. 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 0151
Class: 1
Placard type: Explosive 1.1D
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Isolate spill/leak area immediately for at least 500 meters in all directions. If fire or explosion involved, evacuate 1600 meters in all directions. Mass explosion hazard.
Chemical & Response Details
| Also known as | Pentaerythritol tetranitratePETNPenthriteNitropentaPentritePentaerythrite tetranitrate |
| CAS Number | 78-11-5 |
| Appearance | White crystalline solid or powder, odorless. Stable when pure but highly sensitive to shock, friction, and heat when contaminated or pressed. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (decomposes explosively before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Insoluble in water, no significant reaction with water |
| Extinguishing | Do not use water streams or foam. Use dry sand or earth to cover and isolate material. Fight fire from maximum distance. |
| PPE | ⚠️ Level A required for significant releases. Full protective clothing, SCBA mandatory. Approach only if absolutely necessary and with extreme caution. |
| Isolation | ERG 112: Isolate spill/leak area immediately for at least 500 meters in all directions. If fire or explosion involved, evacuate 1600 meters in all directions. Mass explosion hazard. |
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 0151 — PETN; Penthrite HAZMAT RADIO NOTE — UN 0151
Product: PETN; Penthrite
Class 1 / Explosive 1.1D / ERG 112
PPE: Level A required for significant releases. Full protective clothing, SCBA mandatory. Approach only if absolutely necessary and with extreme caution.
ISOLATION: ERG 112: Isolate spill/leak area immediately for at least 500 meters in all directions. If fire or explosion involved, evacuate 1600 meters in all directions. Mass explosion hazard.
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 0151 — PETN; Penthrite
Class: 1 | Placard: Explosive 1.1D | ERG Guide: 112
Appearance: White crystalline solid or powder, odorless. Stable when pure but highly sensitive to shock, friction, and heat when contaminated or pressed.
Water Reactivity: Insoluble in water, no significant reaction with water
Extinguishing: Do not use water streams or foam. Use dry sand or earth to cover and isolate material. Fight fire from maximum distance.
PPE: Level A required for significant releases. Full protective clothing, SCBA mandatory. Approach only if absolutely necessary and with extreme caution.
Isolation: ERG 112: Isolate spill/leak area immediately for at least 500 meters in all directions. If fire or explosion involved, evacuate 1600 meters in all directions. Mass explosion hazard.
— 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/0151 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0151 PETN; Penthrite Cls1 ERG112 | ERG 112: Isolate spill/leak area immediately for at least 500 meters in all dire | allfirefighter.com/hazmat/un/0151SMS / 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/0151
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 A required for significant releases. Full protective clothing, SCBA mandatory. Approach only if absolutely necessary and with extreme caution.
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.