☣️ UN 0220 • CLASS 1
Urea nitrate, 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 0220
Class: 1
Placard type: Explosive 1.1D
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: isolate 500m minimum all directions; evacuate 1600m downwind if fire involves explosive
Chemical & Response Details
| Also known as | Carbamide nitrateUrea mononitrateNitro ureaUranitraat |
| CAS Number | 124-47-0 |
| Appearance | White to pale yellow crystalline solid. Odorless. Hygroscopic and may cake or clump in moist conditions. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (decomposes/detonates before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Dissolves in water; reduces sensitivity but creates disposal hazard |
| Extinguishing | Do not use water on bulk quantities; dry chemical or sand for small fires only |
| PPE | ⚠️ Level B minimum with face shield; SCBA mandatory; minimize personnel in hazard zone |
| Isolation | ERG 112: isolate 500m minimum all directions; evacuate 1600m downwind if fire involves 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 0220 — Urea nitrate, dry HAZMAT RADIO NOTE — UN 0220
Product: Urea nitrate, dry
Class 1 / Explosive 1.1D / ERG 112
PPE: Level B minimum with face shield; SCBA mandatory; minimize personnel in hazard zone
ISOLATION: ERG 112: isolate 500m minimum all directions; evacuate 1600m downwind if fire involves 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 0220 — Urea nitrate, dry
Class: 1 | Placard: Explosive 1.1D | ERG Guide: 112
Appearance: White to pale yellow crystalline solid. Odorless. Hygroscopic and may cake or clump in moist conditions.
Water Reactivity: Dissolves in water; reduces sensitivity but creates disposal hazard
Extinguishing: Do not use water on bulk quantities; dry chemical or sand for small fires only
PPE: Level B minimum with face shield; SCBA mandatory; minimize personnel in hazard zone
Isolation: ERG 112: isolate 500m minimum all directions; evacuate 1600m downwind if fire involves 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/0220 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0220 Urea nitrate, dry Cls1 ERG112 | ERG 112: isolate 500m minimum all directions; evacuate 1600m downwind if fire in | allfirefighter.com/hazmat/un/0220SMS / 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/0220
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 B minimum with face shield; SCBA mandatory; minimize personnel in hazard zone
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.