☣️ UN 3470 • CLASS 8
Paint related material, corrosive, flammable
Placard: Corrosive. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ This page is a quick-reference aid. For real incidents: stage upwind, isolate, deny entry, request Hazmat early, and consult the current ERG + SOP/SOG.
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Quick details
UN 3470
Class: 8
Placard type: Corrosive
ERG: Guide 132 (check current ERG)
Isolation: ERG 132: Isolate spill 25-50m all directions. For large spill, isolate 800m downwind. Evacuate immediate area if fire involves containers.
Chemical & Response Details
| 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. |
| Extinguishing | Alcohol-resistant foam (AR-AFFF), CO2, dry chemical. Regular foam may not be effective due to solvent content. |
| PPE | ⚠️ Level B minimum. SCBA required. Chemical-resistant suit due to corrosive nature. Neoprene or butyl rubber gloves recommended. |
| Isolation | ERG 132: Isolate spill 25-50m all directions. For large spill, isolate 800m downwind. Evacuate immediate area if fire involves containers. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Flammable/combustible material.
- May be ignited by heat, sparks or flames.
- Vapors may form explosive mixtures with air.
- Vapors may travel to source of ignition and flash back.
- Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas
- Vapor explosion hazard indoors, outdoors or in sewers.
- Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
- Runoff to sewer may create fire or explosion hazard.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 50 meters (150 feet) in all directions.
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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UN 3470 — Paint related material, corrosive, flamm HAZMAT RADIO NOTE — UN 3470
Product: Paint related material, corrosive, flammable
Class 8 / Corrosive / ERG 132
PPE: Level B minimum. SCBA required. Chemical-resistant suit due to corrosive nature. Neoprene or butyl rubber gloves recommended.
ISOLATION: ERG 132: Isolate spill 25-50m all directions. For large spill, isolate 800m downwind. Evacuate immediate area if fire involves containers.
ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO
Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
=== IC HAZMAT BRIEFING ===
UN 3470 — Paint related material, corrosive, flammable
Class: 8 | Placard: Corrosive | ERG Guide: 132
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.
Water Reactivity: Generally no violent reaction with water, but corrosive components may react. Immiscible with water in most formulations.
Extinguishing: Alcohol-resistant foam (AR-AFFF), CO2, dry chemical. Regular foam may not be effective due to solvent content.
PPE: Level B minimum. SCBA required. Chemical-resistant suit due to corrosive nature. Neoprene or butyl rubber gloves recommended.
Isolation: ERG 132: Isolate spill 25-50m all directions. For large spill, isolate 800m downwind. Evacuate immediate area if fire involves containers.
— Key Hazards —
• Flammable/combustible material.
• May be ignited by heat, sparks or flames.
• Vapors may form explosive mixtures with air.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/3470 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3470 Paint related material, corrosive, flammable Cls8 ERG132 | allfirefighter.com/hazmat/un/3470SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS. Includes link to full page.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/3470
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FAQ
Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level B minimum. SCBA required. Chemical-resistant suit due to corrosive nature. Neoprene or butyl rubber gloves recommended.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 132 and your department SOP/SOG for incident-specific protective actions.
Sources (high level): DOT/PHMSA marking & class concepts + ERG usage principles. This page does not reproduce ERG guide text—always consult the current ERG for incident-specific protective actions.