UN 2419 — Bromotrifluoroethylene
Placard: Flammable Gas. ERG Guide 116. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2419 is Bromotrifluoroethylene, an extremely flammable liquefied gas assigned to ERG Guide 116. Gas flow control and cylinder cooling are priorities.
Hazard overview: EXTREMELY FLAMMABLE liquefied compressed gas; may ignite easily by heat, sparks or flames. Gas can form explosive mixtures with air and flash back from ignition sources. Vapors from liquefied gas are initially heavier than air and may spread along the ground.
Response guidance: For UN 2419, isolate the area, remove ignition sources and stop gas flow only if safe. Do not extinguish a leaking gas fire unless flow can be stopped; cool cylinders from protection using ERG 116.
Firefighter training notes: Training for UN 2419 should emphasize flammable gas behavior, source isolation, no-extinguishment-until-flow-stopped tactics, cylinder cooling, flashback and evacuation. Use ERG 116, SDS and local SOP.
Regulatory context: Bromotrifluoroethylene is regulated as a hazardous material for transport and emergency response. Storage, exposure, spill reporting, waste and fire-code duties depend on quantity, concentration and jurisdiction; verify shipping papers, SDS and local authority requirements.
Storage & handling: Bromotrifluoroethylene cylinders should be secured in a cool, ventilated gas-storage area away from heat, physical damage and incompatible materials. Provide leak detection, ventilation and emergency planning according to SDS and local code.
UN 2419 Quick Details
Common Hazards of UN 2419
- EXTREMELY FLAMMABLE liquefied compressed gas; may ignite easily by heat, sparks or flames.
- Gas can form explosive mixtures with air and flash back from ignition sources.
- Vapors from liquefied gas are initially heavier than air and may spread along the ground.
- Cylinders exposed to fire may vent, rupture or rocket.
- Heating may cause pressure rise and polymerization or decomposition risk if inhibited product is involved.
- Fire may produce hydrogen halides and other toxic/corrosive decomposition gases.
- Do not extinguish a leaking gas fire unless the gas flow can be stopped safely.
Chemical Identity & Physical Properties
Colorless liquefied compressed gas with a faint ethereal odor. Shipped as a liquefied gas under its own vapor pressure.
| Also known as | Bromotrifluoroethylene2-Bromo-1,1,2-trifluoroethyleneBTFETrifluorobromoethyleneEthylene, bromotrifluoro- |
| CAS Number | 598-73-2 |
| Appearance | Colorless liquefied compressed gas with a faint ethereal odor. Shipped as a liquefied gas under its own vapor pressure. |
| Flash Point | Not applicable (extremely flammable compressed gas) |
| Boiling Point | -3°C (27°F) |
| Vapor Density | 5.3 (much heavier than air) |
| Water Reactivity | No significant reaction with water; low water solubility |
Fireground Response Guidance — UN 2419
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA, flame-resistant protection and remote operations where possible. Protect against liquefied-gas frostbite and toxic decomposition products.
Isolation & Evacuation
First Actions for a UN 2419 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind and keep people out of low or poorly ventilated areas.
- Treat the release as an inhalation hazard until monitoring proves otherwise.
- Eliminate ignition sources if safe and do not extinguish a leaking gas fire unless flow can be stopped.
- Do not touch leaking cylinders or liquefied gas without proper training and PPE.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 116, SDS, cylinder markings and air monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 2419 — BromotrifluoroethyleneUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.