UN 2942 — 2-Trifluoromethylaniline
Placard: Toxic. ERG Guide 153. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2942 is 2-Trifluoromethylaniline, a toxic aromatic amine entry assigned to ERG Guide 153. Skin absorption and exact isomer/form must be verified.
Hazard overview: TOXIC fluorinated aromatic amine; inhalation, ingestion or skin absorption may cause severe injury. Skin contact and contaminated clothing are major exposure concerns. Combustible liquid or solid depending on isomer/form; may burn but does not ignite readily.
Response guidance: For UN 2942, isolate the area, avoid skin contact and use SCBA where dust, vapor, mist or fire is present. Contain runoff and verify controls with SDS and ERG 153.
Firefighter training notes: Training for UN 2942 should emphasize exposure routes, SCBA use, vapor/dust monitoring, decontamination, runoff containment and SDS verification. Use ERG 153, SDS and local SOP.
Regulatory context: 2-Trifluoromethylaniline is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, formulation and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: 2-Trifluoromethylaniline should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 2942 Quick Details
Common Hazards of UN 2942
- TOXIC fluorinated aromatic amine; inhalation, ingestion or skin absorption may cause severe injury.
- Skin contact and contaminated clothing are major exposure concerns.
- Combustible liquid or solid depending on isomer/form; may burn but does not ignite readily.
- Vapors or molten material can irritate or burn eyes, skin and respiratory tissue.
- Fire may produce nitrogen oxides, hydrogen fluoride/fluorinated fumes and toxic aromatic amine smoke.
- Runoff may carry toxic amine contamination.
- Exact isomer and physical state should be verified from SDS and shipping papers.
Chemical Identity & Physical Properties
Colorless to pale yellow liquid with an amine-like odor. May darken upon exposure to air or light.
| Also known as | o-Trifluoromethylaniline2-(Trifluoromethyl)anilineo-Aminobenzotrifluoride2-Amino-1-(trifluoromethyl)benzenealpha,alpha,alpha-Trifluoro-o-toluidine |
| CAS Number | 88-17-5 |
| Appearance | Colorless to pale yellow liquid with an amine-like odor. May darken upon exposure to air or light. |
| Flash Point | 118°C (244°F) |
| Boiling Point | 187-189°C (369-372°F) |
| Vapor Density | 5.6 (heavier than air) |
| Water Reactivity | No significant reaction with water, though slightly soluble |
Fireground Response Guidance — UN 2942
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, dust, mist, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 2942 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Avoid breathing vapor, dust, gas, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 153, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 2942 — 2-TrifluoromethylanilineUse 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.