UN 3080 — Isocyanate solution, poisonous, flammable, n.o.s.
Placard: Toxic. ERG Guide 155. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3080 is Isocyanate solution, poisonous, flammable, n.o.s., a toxic flammable isocyanate n.o.s. solution assigned to ERG Guide 155. Sensitization and water reaction are key.
Hazard overview: TOXIC and FLAMMABLE isocyanate solution, n.o.s.; vapor or aerosol inhalation may cause severe respiratory sensitization. Vapors may ignite and form explosive mixtures with air. Reacts with water to release carbon dioxide, heat and polymeric solids; closed containers may pressurize.
Response guidance: For UN 3080, isolate the area, avoid skin contact and use SCBA where vapor, dust, mist or fire is present. Contain runoff and verify controls with SDS and ERG 155.
Firefighter training notes: Training for UN 3080 should emphasize exposure routes, SCBA use, vapor/dust monitoring, decontamination, runoff containment and SDS/package verification. Use ERG 155, SDS and local SOP.
Regulatory context: Isocyanate solution, poisonous, flammable, 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, formulation and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Isocyanate solution, poisonous, flammable, n.o.s. should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 3080 Quick Details
Common Hazards of UN 3080
- TOXIC and FLAMMABLE isocyanate solution, n.o.s.; vapor or aerosol inhalation may cause severe respiratory sensitization.
- Vapors may ignite and form explosive mixtures with air.
- Reacts with water to release carbon dioxide, heat and polymeric solids; closed containers may pressurize.
- Skin and eye contact may cause irritation, burns or sensitization.
- Vapors are heavier than air and may travel to ignition sources and flash back.
- Fire may produce nitrogen oxides, isocyanate vapors and hydrogen-cyanide-type toxic gases.
- Exact isocyanate, solvent and concentration must be verified from SDS.
Chemical Identity & Physical Properties
Varies depending on specific isocyanate composition; typically clear to pale yellow liquid with pungent, irritating odor. Highly toxic vapors.
| Also known as | Isocyanate solution n.o.s.Poisonous isocyanate solutionFlammable isocyanate solutionToxic isocyanate mixture |
| Appearance | Varies depending on specific isocyanate composition; typically clear to pale yellow liquid with pungent, irritating odor. Highly toxic vapors. |
| Flash Point | Varies by formulation, typically <23C (<73F) - Class 3 flammable liquid |
| Boiling Point | Varies by specific isocyanate compound, typically 100-200C (212-392F) |
| Vapor Density | >1 (heavier than air); vapors collect in low areas and confined spaces |
| Water Reactivity | Reacts with water producing heat and carbon dioxide; avoid water contact when possible |
Fireground Response Guidance — UN 3080
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA and chemical-resistant protective clothing. Level A or B may be needed for unknown product, heavy vapor/dust or splash risk.
Isolation & Evacuation
First Actions for a UN 3080 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, 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 155, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3080 — Isocyanate solution, poisonous, flammablUse 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.