UN 3470 — Paint related material, corrosive, flammable
Placard: Corrosive. ERG Guide 132. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3470 is Paint related material, corrosive, flammable, a flammable corrosive paint-related material assigned to ERG Guide 132. Solvent vapor, burns and toxic smoke require control.
Hazard overview: FLAMMABLE and CORROSIVE paint-related material; formulation may contain solvents plus acids, bases or corrosive additives. 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 3470, isolate the area, eliminate ignition sources and keep vapors out of drains. Use SCBA, cool equipment and contain flammable/toxic runoff under ERG 132.
Firefighter training notes: Training for UN 3470 should emphasize exposure routes, SCBA use, vapor/dust monitoring, decontamination, runoff containment and SDS verification. Use ERG 132, SDS and local SOP.
Regulatory context: Paint related material, corrosive, flammable is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, concentration, formulation and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Paint related material, corrosive, flammable should be stored in approved flammable/corrosive-compatible packaging away from heat, ignition sources, oxidizers and physical damage, with secondary containment.
UN 3470 Quick Details
Common Hazards of UN 3470
- FLAMMABLE and CORROSIVE paint-related material; formulation may contain solvents plus acids, bases or corrosive additives.
- 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 mist can burn eyes, skin and respiratory tissue.
- Fire may produce toxic/corrosive smoke from solvents, resins, pigments and corrosive components.
- Runoff may be flammable, corrosive, toxic and environmentally harmful.
- Exact formulation, solvent, pH and flash point must be verified from SDS.
Chemical Identity & Physical Properties
Liquid mixture, color varies by formulation (clear to colored). Odor depends on solvent base (often sharp, solvent-like). Flammable and corrosive properties present simultaneously.
| Also known as | Paint thinner mixtureCorrosive paint productFlammable paint compoundPaint solvent mixtureCorrosive coating material |
| Appearance | Liquid mixture, color varies by formulation (clear to colored). Odor depends on solvent base (often sharp, solvent-like). Flammable and corrosive properties present simultaneously. |
| Flash Point | Typically below 60°C (140°F) - varies by formulation |
| Boiling Point | Varies widely by solvent composition, typically 60-150°C (140-302°F) |
| Vapor Density | Greater than 1 (heavier than air) - exact value depends on solvent mixture |
| Water Reactivity | Generally no violent reaction with water, but corrosive components may react. Immiscible with water in most formulations. |
Fireground Response Guidance — UN 3470
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 3470 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, equipment 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 132, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3470 — Paint related material, corrosive, flammUse 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.