UN 3286 — Flammable liquid, poisonous, corrosive, n.o.s.
Placard: Flammable. ERG Guide 131. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3286 is Flammable liquid, poisonous, corrosive, n.o.s., a broad flammable toxic corrosive liquid entry assigned to ERG Guide 131. Flashback, burns and toxicity all matter.
Hazard overview: FLAMMABLE, TOXIC and CORROSIVE liquid, n.o.s.; inhalation, ingestion or skin contact may cause severe injury. Vapors may ignite and form explosive mixtures with air. Vapors are heavier than air and may travel to ignition sources and flash back.
Response guidance: For UN 3286, isolate the area, eliminate ignition sources and keep vapors out of drains. Use SCBA, contain runoff and select foam/dry chemical/CO2 using SDS and ERG 131.
Firefighter training notes: Training for UN 3286 should emphasize product verification, SCBA use, vapor/dust monitoring, fire behavior, decontamination and runoff control. Use ERG 131, SDS and local SOP.
Regulatory context: Flammable liquid, poisonous, corrosive, n.o.s. is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, composition, concentration and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Flammable liquid, poisonous, corrosive, n.o.s. should be stored in approved flammable-liquid containers with ventilation, ignition control, secondary containment and segregation from oxidizers and incompatible materials.
UN 3286 Quick Details
Common Hazards of UN 3286
- FLAMMABLE, TOXIC and CORROSIVE liquid, n.o.s.; inhalation, ingestion or skin contact may cause severe injury.
- Vapors may ignite and form explosive mixtures with air.
- Vapors are heavier than air and may travel to ignition sources and flash back.
- Liquid or vapor can burn eyes, skin and respiratory tissue.
- Fire may produce toxic and corrosive gases depending on exact composition.
- Runoff may be flammable, toxic, corrosive and harmful to waterways.
- Exact liquid identity, flash point, pH and toxicity must be verified from SDS.
Chemical Identity & Physical Properties
Generic classification for flammable liquids that are also toxic and corrosive. Physical properties vary depending on specific chemical; typically a liquid at room temperature with characteristics determined by the actual substance shipped under this UN number.
| Also known as | Flammable liquid, toxic, corrosive, n.o.s.Flammable liquid, poisonous, corrosive, not otherwise specifiedUN3286 |
| Appearance | Generic classification for flammable liquids that are also toxic and corrosive. Physical properties vary depending on specific chemical; typically a liquid at room temperature with characteristics determined by the actual substance shipped under this UN number. |
| Flash Point | Varies by specific substance; typically below 23C (73F) for Class 3 flammable liquids |
| Boiling Point | Varies by specific substance |
| Vapor Density | Varies by specific substance; typically heavier than air |
| Water Reactivity | Varies by specific substance; some may react with water due to corrosive properties |
Fireground Response Guidance — UN 3286
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, mist, fire or confined-space exposure. Wear chemical-resistant splash suit, gloves, boots and eye/face protection.
Isolation & Evacuation
First Actions for a UN 3286 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.
- Eliminate ignition sources if this can be done safely.
- 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 liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 131, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3286 — Flammable liquid, poisonous, corrosive,Use 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.