☣️ UN 0154 • CLASS 1
Trinitrophenol; Picric acid, dry
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 0154
Class: 1
Placard type: Explosive 1.1D
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Isolate 500m (1600 ft) in all directions. Evacuate 1600m (1 mile) if fire or explosion risk. Treat as military explosive.
Chemical & Response Details
| Also known as | Picric acid2,4,6-TrinitrophenolTNPPicronitric acidMeliniteLydditeShimose |
| CAS Number | 88-89-1 |
| Appearance | Yellow crystalline solid with a bitter taste. Odorless to slight aromatic odor. Highly explosive when dry. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Explodes above 300C (572F) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Soluble in water; forms shock-sensitive metal salts with metal containers. Dry material extremely sensitive. |
| Extinguishing | Do not use water streams; flooding quantities only if material is burning. Dry chemical or CO2 for small fires. |
| PPE | ⚠️ Level A with full face SCBA required. Approach from upwind/uphill. Bomb squad/explosive ordnance disposal may be required. |
| Isolation | ERG 112: Isolate 500m (1600 ft) in all directions. Evacuate 1600m (1 mile) if fire or explosion risk. Treat as military explosive. |
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 0154 — Trinitrophenol; Picric acid, dry HAZMAT RADIO NOTE — UN 0154
Product: Trinitrophenol; Picric acid, dry
Class 1 / Explosive 1.1D / ERG 112
PPE: Level A with full face SCBA required. Approach from upwind/uphill. Bomb squad/explosive ordnance disposal may be required.
ISOLATION: ERG 112: Isolate 500m (1600 ft) in all directions. Evacuate 1600m (1 mile) if fire or explosion risk. Treat as military explosive.
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 0154 — Trinitrophenol; Picric acid, dry
Class: 1 | Placard: Explosive 1.1D | ERG Guide: 112
Appearance: Yellow crystalline solid with a bitter taste. Odorless to slight aromatic odor. Highly explosive when dry.
Water Reactivity: Soluble in water; forms shock-sensitive metal salts with metal containers. Dry material extremely sensitive.
Extinguishing: Do not use water streams; flooding quantities only if material is burning. Dry chemical or CO2 for small fires.
PPE: Level A with full face SCBA required. Approach from upwind/uphill. Bomb squad/explosive ordnance disposal may be required.
Isolation: ERG 112: Isolate 500m (1600 ft) in all directions. Evacuate 1600m (1 mile) if fire or explosion risk. Treat as military explosive.
— 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/0154 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0154 Trinitrophenol; Picric acid, dry Cls1 ERG112 | allfirefighter.com/hazmat/un/0154SMS / 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/0154
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 with full face SCBA required. Approach from upwind/uphill. Bomb squad/explosive ordnance disposal may be required.
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.