☣️ UN 2067 • CLASS 5
UN 2067 — Ammonium nitrate based fertilizer
Placard: Oxidizer. ERG Guide 140. 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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UN 2067 Quick Details
UN 2067
Product name: Ammonium nitrate based fertilizer
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 140 (check current ERG)
Initial isolation: ERG 140: Initial isolation 100m in all directions. For large spills isolate 500m. Evacuate area and fight fire from maximum distance. If material involved in fire or exposed to direct flame, evacuate 800m radius.
Common Hazards of UN 2067
- These substances will accelerate burning when involved in a fire.
- Some may decompose explosively when heated or involved in a fire.
- May explode from heat or contamination.
- Some will react explosively with hydrocarbons (fuels).
- May ignite combustibles (wood, paper, oil, clothing, etc.).
- Containers may explode when heated.
- Runoff may create fire or explosion hazard.
- Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or
Chemical Identity & Physical Properties
| Also known as | Ammonium nitrate fertilizerAN fertilizerNitramCalcium ammonium nitrateCAN fertilizerNitrogenous fertilizer |
| Appearance | White to grayish crystalline granules or prills, hygroscopic solid. Odorless or slight ammonia odor. Appears as pellets, granules, or prilled form at room temperature. |
| Flash Point | Not applicable (oxidizing solid, non-flammable but supports combustion) |
| Boiling Point | Decomposes at approximately 210C (410F) before boiling; releases toxic nitrogen oxides |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | Dissolves readily in water; no violent reaction but forms an exothermic solution. Contaminated runoff is a pollution hazard. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2067
Extinguishing Media
Water spray or fog for cooling. DO NOT use foam directly on material. Dry sand or earth for small fires. Keep away from combustibles.
PPE Requirements
⚠️ Level B minimum recommended. SCBA with full protective clothing required for fire conditions. Avoid all skin and eye contact due to oxidizer properties.
Isolation & Evacuation
ERG 140: Initial isolation 100m in all directions. For large spills isolate 500m. Evacuate area and fight fire from maximum distance. If material involved in fire or exposed to direct flame, evacuate 800m radius.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 140).
First Actions for a UN 2067 Incident
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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UN 2067 — Ammonium nitrate based fertilizerHAZMAT RADIO NOTE — UN 2067
Product: Ammonium nitrate based fertilizer
Class 5 / Oxidizer / ERG 140
PPE: Level B minimum recommended. SCBA with full protective clothing required for fire conditions. Avoid all skin and eye contact due to oxidizer properties.
ISOLATION: ERG 140: Initial isolation 100m in all directions. For large spills isolate 500m. Evacuate area and fight fire from maximum distance. If material involved in fire or exposed to direct flame, evacuate 800m radius.
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 2067 — Ammonium nitrate based fertilizer
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: White to grayish crystalline granules or prills, hygroscopic solid. Odorless or slight ammonia odor. Appears as pellets, granules, or prilled form at room temperature.
Water Reactivity: Dissolves readily in water; no violent reaction but forms an exothermic solution. Contaminated runoff is a pollution hazard.
Extinguishing: Water spray or fog for cooling. DO NOT use foam directly on material. Dry sand or earth for small fires. Keep away from combustibles.
PPE: Level B minimum recommended. SCBA with full protective clothing required for fire conditions. Avoid all skin and eye contact due to oxidizer properties.
Isolation: ERG 140: Initial isolation 100m in all directions. For large spills isolate 500m. Evacuate area and fight fire from maximum distance. If material involved in fire or exposed to direct flame, evacuate 800m radius.
— Key Hazards —
• These substances will accelerate burning when involved in a fire.
• Some may decompose explosively when heated or involved in a fire.
• May explode from heat or contamination.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/2067 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2067 Ammonium nitrate based fertilizer Cls5 ERG140 | allfirefighter.com/hazmat/un/2067SMS / 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/2067
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Frequently Asked Questions about UN 2067
These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard. Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level B minimum recommended. SCBA with full protective clothing required for fire conditions. Avoid all skin and eye contact due to oxidizer properties.
Water reactivity: Dissolves readily in water; no violent reaction but forms an exothermic solution. Contaminated runoff is a pollution hazard.. Recommended extinguishing: Water spray or fog for cooling. DO NOT use foam directly on material. Dry sand or earth for small fires. Keep away from combustibles..
ERG Guide 140 recommendation: ERG 140: Initial isolation 100m in all directions. For large spills isolate 500m. Evacuate area and fight fire from maximum distance. If material involved in fire or exposed to direct flame, evacuate 800m radius.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 140 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.