UN 2285 — Isocyanatobenzotrifluorides
Placard: Toxic. ERG Guide 155. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2285 is Isocyanatobenzotrifluorides, a toxic water-reactive isocyanate liquid assigned to ERG Guide 155. Moisture can produce heat, carbon dioxide pressure and toxic/corrosive products.
Hazard overview: TOXIC and water-reactive isocyanate liquid; inhalation of vapor or aerosol may cause severe respiratory sensitization. Reacts with water to release carbon dioxide, heat and corrosive/toxic products; pressure buildup may occur in closed containers. Combustible material: may burn but does not ignite readily.
Response guidance: For a UN 2285 incident, verify the product with shipping papers, container markings, SDS and ERG Guide 155. Establish incident command, isolate the area, stay upwind, control ignition or incompatibility hazards, prevent runoff, dust or vapor spread and base entry/fire-control actions on monitoring and local SOP.
Firefighter training notes: Training for UN 2285 should emphasize isocyanate respiratory sensitization, water reaction/CO2 pressure, vapor monitoring, PPE, decontamination and runoff containment. Use ERG 155, SDS and local SOP.
Regulatory context: Isocyanatobenzotrifluorides is regulated as a hazardous material for transportation and emergency response purposes. Storage, workplace exposure, emergency planning, spill reporting, waste handling and environmental requirements vary by exact product, concentration, quantity and jurisdiction. Verify current requirements through shipping papers, SDS, container markings and applicable DOT, OSHA, EPA, NFPA, state or local authority guidance.
Storage & handling: Isocyanatobenzotrifluorides should be stored in tightly closed compatible containers in a cool, dry, ventilated area away from water/moisture, amines, alcohols, acids/bases where incompatible and heat. Prevent pressure buildup and humid air exposure.
UN 2285 Quick Details
Common Hazards of UN 2285
- TOXIC and water-reactive isocyanate liquid; inhalation of vapor or aerosol may cause severe respiratory sensitization.
- Reacts with water to release carbon dioxide, heat and corrosive/toxic products; pressure buildup may occur in closed containers.
- Combustible material: may burn but does not ignite readily.
- Skin and eye contact may cause irritation, burns or sensitization.
- Vapors may collect in low or confined areas depending on temperature and formulation.
- Fire may produce hydrogen fluoride, nitrogen oxides, isocyanate vapors and other toxic/corrosive gases.
- Runoff may spread toxic fluorinated isocyanate contamination.
Chemical Identity & Physical Properties
Clear to pale yellow liquid with a pungent, acrid odor. Liquid at room temperature with lachrymatory (tear-producing) properties.
| Also known as | Trifluoromethyl phenyl isocyanateBenzotrifluoride isocyanateToluene trifluoride isocyanateα,α,α-Trifluorotoluene isocyanate |
| Appearance | Clear to pale yellow liquid with a pungent, acrid odor. Liquid at room temperature with lachrymatory (tear-producing) properties. |
| Flash Point | 91°C (196°F) |
| Boiling Point | 152-155°C (306-311°F) |
| Vapor Density | 6.5 (heavier than air) |
| Water Reactivity | Reacts with water liberating toxic gases and heat; avoid water contact |
Fireground Response Guidance — UN 2285
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, aerosol, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing selected from SDS; Level A may be needed for heavy vapor, moisture reaction or unknown concentrations.
Isolation & Evacuation
First Actions for a UN 2285 Incident
- CALL 911. Then call the emergency response telephone number on the shipping paper, if available.
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Avoid breathing vapors, dust, mist, smoke or fumes and avoid skin or eye contact.
- Avoid unnecessary water contact with released product unless incident command confirms a compatible control use.
- Do not touch damaged containers or spilled material unless properly trained and wearing appropriate protective equipment.
- Ventilate closed spaces before entering, but only if properly trained, equipped, monitored and authorized by incident command.
- Isolate the spill or release area and expand the perimeter for fire involvement, vapor spread, dust generation, water reaction or unknown product identity.
- Use ERG Guide 155, shipping papers, SDS, air monitoring and incident command for protective actions.
📋 Copy & Share Field Card
UN 2285 — IsocyanatobenzotrifluoridesUse 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.