☣️ UN 0144 • CLASS 1
Nitroglycerin solution in alcohol
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 0144
Class: 1
Placard type: Explosive 1.1D
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Isolate spill or leak area immediately for at least 500 meters (1600 feet) in all directions; if fire or explosion occurs, evacuate for 1600 meters (1 mile) in all directions; consider evacuation of downwind area if material is on fire
Chemical & Response Details
| Also known as | Glyceryl trinitrateTrinitroglycerinGTNNGNitroglycerine1,2,3-Propanetriol trinitrate |
| CAS Number | 55-63-0 |
| Appearance | Pale yellow to colorless oily liquid when pure; in alcohol solution appears as clear to pale yellow liquid with faint sweet odor. Heavier than water. |
| Flash Point | Not applicable (explosive liquid) |
| Boiling Point | Not applicable (explosive decomposition occurs before boiling, detonates at approximately 218C/424F) |
| Vapor Density | Not applicable (non-volatile liquid, negligible vapor pressure at room temperature) |
| Water Reactivity | No significant reaction with water, but nitroglycerin is only slightly soluble; alcohol solution may mix with water diluting the explosive concentration |
| Extinguishing | Do not use water streams directly on material; flooding amounts of water from distance may be used; alcohol-resistant foam if available; CO2 and dry chemical ineffective on fires involving explosives |
| PPE | ⚠️ Level A required for spill response; full explosive ordnance disposal (EOD) protective ensemble if detonation risk exists; SCBA mandatory; avoid all sources of ignition, heat, friction, and shock |
| Isolation | ERG 112: Isolate spill or leak area immediately for at least 500 meters (1600 feet) in all directions; if fire or explosion occurs, evacuate for 1600 meters (1 mile) in all directions; consider evacuation of downwind area if material is on fire |
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 0144 — Nitroglycerin solution in alcohol HAZMAT RADIO NOTE — UN 0144
Product: Nitroglycerin solution in alcohol
Class 1 / Explosive 1.1D / ERG 112
PPE: Level A required for spill response; full explosive ordnance disposal (EOD) protective ensemble if detonation risk exists; SCBA mandatory; avoid all sources of ignition, heat, friction, and shock
ISOLATION: ERG 112: Isolate spill or leak area immediately for at least 500 meters (1600 feet) in all directions; if fire or explosion occurs, evacuate for 1600 meters (1 mile) in all directions; consider evacuation of downwind area if material is on fire
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 0144 — Nitroglycerin solution in alcohol
Class: 1 | Placard: Explosive 1.1D | ERG Guide: 112
Appearance: Pale yellow to colorless oily liquid when pure; in alcohol solution appears as clear to pale yellow liquid with faint sweet odor. Heavier than water.
Water Reactivity: No significant reaction with water, but nitroglycerin is only slightly soluble; alcohol solution may mix with water diluting the explosive concentration
Extinguishing: Do not use water streams directly on material; flooding amounts of water from distance may be used; alcohol-resistant foam if available; CO2 and dry chemical ineffective on fires involving explosives
PPE: Level A required for spill response; full explosive ordnance disposal (EOD) protective ensemble if detonation risk exists; SCBA mandatory; avoid all sources of ignition, heat, friction, and shock
Isolation: ERG 112: Isolate spill or leak area immediately for at least 500 meters (1600 feet) in all directions; if fire or explosion occurs, evacuate for 1600 meters (1 mile) in all directions; consider evacuation of downwind area if material is on fire
— 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/0144 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0144 Nitroglycerin solution in alcohol Cls1 ERG112 | allfirefighter.com/hazmat/un/0144SMS / 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/0144
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 spill response; full explosive ordnance disposal (EOD) protective ensemble if detonation risk exists; SCBA mandatory; avoid all sources of ignition, heat, friction, and shock
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.