☣️ UN 0143 • CLASS 1
Nitroglycerin, desensitized
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 0143
Class: 1
Placard type: Explosive 1.1D
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Isolate 800m (1/2 mile) in all directions; consider evacuation for 1600m (1 mile) in all directions if fire involves explosives
Chemical & Response Details
| Also known as | Glyceryl trinitrateTrinitroglycerin1,2,3-Propanetriol trinitrateNitroglycerolNGGTN |
| CAS Number | 55-63-0 |
| Appearance | Pale yellow to colorless oily liquid when pure; desensitized forms are mixtures or solutions with reduced sensitivity. Practically odorless or slight aromatic odor. |
| Flash Point | Not applicable (explosive liquid) |
| Boiling Point | Explodes at approximately 50-60C (122-140F) before normal boiling occurs |
| Vapor Density | 7.6 (much heavier than air) |
| Water Reactivity | Slightly soluble in water; no violent reaction but maintain desensitization |
| Extinguishing | Use water spray from distance to keep containers cool; no direct application to material; foam may be used on surrounding fires |
| PPE | ⚠️ Level A required; full encapsulating suit with SCBA; approach only if properly trained in explosives handling; avoid all shock, friction, and heat sources |
| Isolation | ERG 112: Isolate 800m (1/2 mile) in all directions; consider evacuation for 1600m (1 mile) in all directions if fire involves explosives |
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 0143 — Nitroglycerin, desensitized HAZMAT RADIO NOTE — UN 0143
Product: Nitroglycerin, desensitized
Class 1 / Explosive 1.1D / ERG 112
PPE: Level A required; full encapsulating suit with SCBA; approach only if properly trained in explosives handling; avoid all shock, friction, and heat sources
ISOLATION: ERG 112: Isolate 800m (1/2 mile) in all directions; consider evacuation for 1600m (1 mile) in all directions if fire involves explosives
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 0143 — Nitroglycerin, desensitized
Class: 1 | Placard: Explosive 1.1D | ERG Guide: 112
Appearance: Pale yellow to colorless oily liquid when pure; desensitized forms are mixtures or solutions with reduced sensitivity. Practically odorless or slight aromatic odor.
Water Reactivity: Slightly soluble in water; no violent reaction but maintain desensitization
Extinguishing: Use water spray from distance to keep containers cool; no direct application to material; foam may be used on surrounding fires
PPE: Level A required; full encapsulating suit with SCBA; approach only if properly trained in explosives handling; avoid all shock, friction, and heat sources
Isolation: ERG 112: Isolate 800m (1/2 mile) in all directions; consider evacuation for 1600m (1 mile) in all directions if fire involves explosives
— 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/0143 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0143 Nitroglycerin, desensitized Cls1 ERG112 | allfirefighter.com/hazmat/un/0143SMS / 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/0143
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; full encapsulating suit with SCBA; approach only if properly trained in explosives handling; avoid all shock, friction, and heat sources
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.