☣️ UN 3475 • CLASS 3
UN 3475 — Ethanol and motor spirit mixture, with more than 10% ethanol
Placard: Flammable. ERG Guide 127. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ Verification required:
Broad or variable material category; verify exact product, SDS and shipping papers.
⚠️ 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.
UN 3475 covers ethanol and motor spirit mixtures with more than 10% ethanol, including many gasoline-alcohol fuel blends.
Hazard overview: The main hazard is rapid ignition. Vapors may form explosive mixtures with air, travel to ignition sources, and create sewer or confined-space explosion risks.
Response guidance: Isolate the area, stay upwind, eliminate ignition sources, and use alcohol-resistant foam, dry chemical, or CO2. Use water spray only for cooling containers.
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UN 3475 Quick Details
UN 3475
Product name: Ethanol and motor spirit mixture, with more than 10% ethanol
DOT Class: 3
Placard type: Flammable
ERG Guide: 127 (check current ERG)
Initial isolation: ERG 127: isolate 50m all directions; evacuate 300m downwind if large spill; 800m if tank fire
Common Hazards of UN 3475
- HIGHLY FLAMMABLE: Will be easily 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.
- Containers may explode when heated.
Chemical Identity & Physical Properties
Ethanol and motor spirit mixture, with more than 10% ethanol, is a clear to pale yellow liquid with a characteristic gasoline/alcohol odor and is volatile flammable liquid at room temperature.
| Also known as | GasoholE15E85Ethanol-gasoline blendFlex fuelBioethanol fuel mixture |
| Appearance | Clear to pale yellow liquid with a characteristic gasoline/alcohol odor. Volatile flammable liquid at room temperature. |
| Flash Point | -43C (-45F) |
| Boiling Point | Variable, 56-215C depending on blend ratio |
| Vapor Density | 2-4 (heavier than air) |
| Water Reactivity | No significant reaction; partially water-miscible due to ethanol content |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3475
Extinguishing Media
Alcohol-resistant AFFF (AR-AFFF), dry chemical, CO2; regular AFFF less effective
PPE Requirements
⚠️ Level B minimum; SCBA required; chemical-resistant gloves and clothing
Level B minimum with SCBA, chemical-resistant gloves, and flame-resistant protective clothing is appropriate when vapors, fire, or spill exposure is possible.
Isolation & Evacuation
ERG 127: isolate 50m all directions; evacuate 300m downwind if large spill; 800m if tank fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 127).
First Actions for a UN 3475 Incident
- CALL 911. Then call the emergency response number on the shipping paper, if available.
- 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.
- Consider initial downwind evacuation for at least 300 meters (1000 feet).
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📋 Copy & Share Field Card
UN 3475 — Ethanol and motor spirit mixture, with mHAZMAT RADIO NOTE — UN 3475
Product: Ethanol and motor spirit mixture, with more than 10% ethanol
Class 3 / Flammable / ERG 127
PPE: Level B minimum; SCBA required; chemical-resistant gloves and clothing
ISOLATION: ERG 127: isolate 50m all directions; evacuate 300m downwind if large spill; 800m if tank fire
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 3475 — Ethanol and motor spirit mixture, with more than 10% ethanol
Class: 3 | Placard: Flammable | ERG Guide: 127
Appearance: Clear to pale yellow liquid with a characteristic gasoline/alcohol odor. Volatile flammable liquid at room temperature.
Water Reactivity: No significant reaction; partially water-miscible due to ethanol content
Extinguishing: Alcohol-resistant AFFF (AR-AFFF), dry chemical, CO2; regular AFFF less effective
PPE: Level B minimum; SCBA required; chemical-resistant gloves and clothing
Isolation: ERG 127: isolate 50m all directions; evacuate 300m downwind if large spill; 800m if tank fire
— Key Hazards —
• HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
• Vapors may form explosive mixtures with air.
• Vapors may travel to source of ignition and flash back.
— First Actions —
• CALL 911. Then call the emergency response number on the shipping paper, if available.
• 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/ethanol-and-motor-spirit-un-3475 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN3475 Ethanol and motor spirit mixture, with more than 10% ethanol Cls3 ERG127 | allfirefighter.com/hazmat/un/ethanol-and-motor-spirit-un-3475SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/ethanol-and-motor-spirit-un-3475
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Frequently Asked Questions about UN 3475
Yes. It is highly flammable and can be ignited by heat, sparks, or flame.
No significant reaction is expected, but ethanol content makes the fuel partly water-miscible and runoff can spread contamination.
Level B with SCBA and chemical-resistant/flame-resistant protection is recommended for fire or vapor exposure.
Isolate at least 50 m, remove ignition sources, stay upwind, and consider downwind evacuation for large spills.
UN 3475 is assigned to ERG Guide 127 for initial emergency response guidance.
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.