UN 2432 — N,N-Diethylaniline
Placard: Toxic. ERG Guide 153. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2432 At a Glance
UN 2432 (N,N-Diethylaniline) is listed as DOT Class 6 Toxic and is assigned to ERG Guide 153. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
UN 2432 is N,N-Diethylaniline, a toxic aromatic amine entry assigned to ERG Guide 153. Skin absorption and contaminated clothing are major response concerns.
Hazard overview: TOXIC aromatic amine; inhalation, ingestion or skin absorption may cause severe injury. Skin absorption and contaminated clothing are major exposure concerns. Combustible material: may burn but does not ignite readily.
Response guidance: For UN 2432, isolate the area, avoid skin contact and use SCBA where dust, vapor, mist or fire is present. Contain toxic/corrosive runoff and verify exact product controls with SDS and ERG 153.
Firefighter training notes: Training for UN 2432 should emphasize toxic/corrosive exposure routes, skin absorption, SCBA use, decontamination, runoff containment and SDS verification. Use ERG 153, SDS and local SOP.
Regulatory context: N,N-Diethylaniline 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: N,N-Diethylaniline should be stored in tightly closed compatible containers in a secure toxic/corrosive-material area with ventilation, secondary containment, restricted access and SDS-based segregation.
UN 2432 Quick Details
Common Hazards of UN 2432
- TOXIC aromatic amine; inhalation, ingestion or skin absorption may cause severe injury.
- Skin absorption and contaminated clothing are major exposure concerns.
- Combustible material: may burn but does not ignite readily.
- Exposure may cause systemic blood/oxygen-carrying effects depending on dose and isomer.
- Fire may produce nitrogen oxides and toxic aromatic amine smoke.
- Runoff may carry toxic contamination.
- Avoid dust, vapor or liquid contact and control decontamination waste.
Chemical Identity & Physical Properties
Clear to pale yellow oily liquid with a faint amine-like odor. Darkens on exposure to air and light.
| Also known as | N,N-DiethylanilineDiethylanilineN,N-DiethylbenzenamineDEADiethylphenylamine |
| CAS Number | 91-66-7 |
| Appearance | Clear to pale yellow oily liquid with a faint amine-like odor. Darkens on exposure to air and light. |
| Flash Point | 85°C (185°F) |
| Boiling Point | 216°C (421°F) |
| Vapor Density | 5.2 (heavier than air) |
| Water Reactivity | No significant reaction; insoluble in water |
Fireground Response Guidance — UN 2432
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for dust, vapor, mist, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and clothing; avoid skin contact.
Isolation & Evacuation
First Actions for a UN 2432 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, 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 dust, liquid, 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 2432 — N,N-DiethylanilineUse 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.