☣️ UN 2417 • CLASS 2
UN 2417 — Carbonyl fluoride
Placard: Toxic Gas. ERG Guide 125. 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 2417 Quick Details
UN 2417
Product name: Carbonyl fluoride
DOT Class: 2
Placard type: Toxic Gas
ERG Guide: 125 (check current ERG)
Initial isolation: ERG 125: isolate 100m all directions initially; evacuate 800m downwind if large spill or fire
Common Hazards of UN 2417
- TOXIC and/or CORROSIVE; may be fatal if inhaled, ingested or absorbed through skin.
- Vapors are extremely irritating and corrosive.
- Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
- Fire will produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may cause environmental contamination.
- Some may burn but none ignite readily.
- Vapors from liquefied gas are initially heavier than air and spread along ground.
- Some of these materials may react violently with water.
Chemical Identity & Physical Properties
| Also known as | Carbon oxyfluorideFluoroformyl fluorideFluorophosgeneCOF2 |
| CAS Number | 353-50-4 |
| Appearance | Colorless gas with a pungent, acrid odor. Supplied as a liquefied compressed gas. Highly toxic and corrosive. |
| Flash Point | Not applicable (non-flammable gas) |
| Boiling Point | -83C (-117F) |
| Vapor Density | 2.3 (heavier than air) |
| Water Reactivity | Reacts with water to form hydrofluoric acid and carbon dioxide; highly corrosive products |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2417
Extinguishing Media
Not applicable; use water spray to reduce vapors, protect personnel with water fog
PPE Requirements
⚠️ Level A required for leak response; SCBA mandatory; acid-resistant suits; avoid all contact
Isolation & Evacuation
ERG 125: isolate 100m all directions initially; evacuate 800m downwind if large spill or fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 125).
First Actions for a UN 2417 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.
- Many gases are heavier than air and will spread along the ground and collect in low or confined areas
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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📋 Copy & Share Field Card
UN 2417 — Carbonyl fluorideHAZMAT RADIO NOTE — UN 2417
Product: Carbonyl fluoride
Class 2 / Toxic Gas / ERG 125
PPE: Level A required for leak response; SCBA mandatory; acid-resistant suits; avoid all contact
ISOLATION: ERG 125: isolate 100m all directions initially; evacuate 800m downwind if large spill or 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 2417 — Carbonyl fluoride
Class: 2 | Placard: Toxic Gas | ERG Guide: 125
Appearance: Colorless gas with a pungent, acrid odor. Supplied as a liquefied compressed gas. Highly toxic and corrosive.
Water Reactivity: Reacts with water to form hydrofluoric acid and carbon dioxide; highly corrosive products
Extinguishing: Not applicable; use water spray to reduce vapors, protect personnel with water fog
PPE: Level A required for leak response; SCBA mandatory; acid-resistant suits; avoid all contact
Isolation: ERG 125: isolate 100m all directions initially; evacuate 800m downwind if large spill or fire
— Key Hazards —
• TOXIC and/or CORROSIVE; may be fatal if inhaled, ingested or absorbed through skin.
• Vapors are extremely irritating and corrosive.
• Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
— 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.
• Many gases are heavier than air and will spread along the ground and collect in low or confined areas
SOURCE: allfirefighter.com/hazmat/un/2417 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2417 Carbonyl fluoride Cls2 ERG125 | ERG 125: isolate 100m all directions initially; evacuate 800m downwind if large | allfirefighter.com/hazmat/un/2417SMS / 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/2417
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Frequently Asked Questions about UN 2417
TOXIC and/or CORROSIVE; may be fatal if inhaled, ingested or absorbed through skin. Vapors are extremely irritating and corrosive. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. Some may burn but none ignite readily. Vapors from liquefied gas are initially heavier than air and spread along ground. Some of these materials may react violently with water.
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 A required for leak response; SCBA mandatory; acid-resistant suits; avoid all contact
Water reactivity: Reacts with water to form hydrofluoric acid and carbon dioxide; highly corrosive products. Recommended extinguishing: Not applicable; use water spray to reduce vapors, protect personnel with water fog.
ERG Guide 125 recommendation: ERG 125: isolate 100m all directions initially; evacuate 800m downwind if large spill or fire
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 125 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.