☣️ UN 3274 • CLASS 3
UN 3274 — Alcoholates solution, n.o.s., in alcohol
Placard: Flammable. ERG Guide 132. 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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UN 3274 Quick Details
UN 3274
Product name: Alcoholates solution, n.o.s., in alcohol
DOT Class: 3
Placard type: Flammable
ERG Guide: 132 (check current ERG)
Initial isolation: ERG 132: isolate spill 50m all directions; large spill isolate 800m downwind; evacuate if tank/railcar involved in fire
Common Hazards of UN 3274
- 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.
Chemical Identity & Physical Properties
| Also known as | Alcoholates in alcohol solutionMetal alcoholatesAlkoxides in alcoholSodium methylate solutionPotassium ethylate solution |
| Appearance | Clear to slightly cloudy liquid, varying in color from colorless to pale yellow depending on the specific alcoholate. Strong alcohol odor. Liquid at room temperature. |
| Flash Point | Typically 11-23C (52-73F) depending on alcohol solvent (methanol or ethanol base) |
| Boiling Point | 64-78C (147-172F) depending on alcohol solvent used |
| Vapor Density | 1.1-2.7 (heavier than air) depending on specific alcoholate and solvent |
| Water Reactivity | Reacts with water generating heat and flammable hydrogen gas; may ignite spontaneously |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3274
Extinguishing Media
Alcohol-resistant foam (AFFF-AR) only; regular foam will be destroyed; dry chemical, CO2 also suitable
PPE Requirements
⚠️ Level B minimum with chemical-resistant suit; SCBA required; avoid skin contact as material is corrosive
Isolation & Evacuation
ERG 132: isolate spill 50m all directions; large spill isolate 800m downwind; evacuate if tank/railcar involved in fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 132).
First Actions for a UN 3274 Incident
- 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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📋 Copy & Share Field Card
UN 3274 — Alcoholates solution, n.o.s., in alcoholHAZMAT RADIO NOTE — UN 3274
Product: Alcoholates solution, n.o.s., in alcohol
Class 3 / Flammable / ERG 132
PPE: Level B minimum with chemical-resistant suit; SCBA required; avoid skin contact as material is corrosive
ISOLATION: ERG 132: isolate spill 50m all directions; large spill isolate 800m downwind; evacuate if tank/railcar involved in 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 3274 — Alcoholates solution, n.o.s., in alcohol
Class: 3 | Placard: Flammable | ERG Guide: 132
Appearance: Clear to slightly cloudy liquid, varying in color from colorless to pale yellow depending on the specific alcoholate. Strong alcohol odor. Liquid at room temperature.
Water Reactivity: Reacts with water generating heat and flammable hydrogen gas; may ignite spontaneously
Extinguishing: Alcohol-resistant foam (AFFF-AR) only; regular foam will be destroyed; dry chemical, CO2 also suitable
PPE: Level B minimum with chemical-resistant suit; SCBA required; avoid skin contact as material is corrosive
Isolation: ERG 132: isolate spill 50m all directions; large spill isolate 800m downwind; evacuate if tank/railcar involved in fire
— 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/3274 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3274 Alcoholates solution, n.o.s., in alcohol Cls3 ERG132 | allfirefighter.com/hazmat/un/3274SMS / 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/3274
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Frequently Asked Questions about UN 3274
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 with chemical-resistant suit; SCBA required; avoid skin contact as material is corrosive
Water reactivity: Reacts with water generating heat and flammable hydrogen gas; may ignite spontaneously. Recommended extinguishing: Alcohol-resistant foam (AFFF-AR) only; regular foam will be destroyed; dry chemical, CO2 also suitable.
ERG Guide 132 recommendation: ERG 132: isolate spill 50m all directions; large spill isolate 800m downwind; evacuate if tank/railcar involved in fire
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.