☣️ UN 1090 • CLASS 3
UN 1090 — Acetone
Placard: Flammable. ERG Guide 127. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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 1090 Quick Details
UN 1090
Product name: Acetone
DOT Class: 3
Placard type: Flammable
ERG Guide: 127 (check current ERG)
Initial isolation: ERG 127: Isolate spill area minimum 50m in all directions. For large spill, isolate 150m and evacuate downwind 300m initially.
Common Hazards of UN 1090
- 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
| Also known as | 2-PropanoneDimethyl ketonePropan-2-oneMethyl ketoneBeta-ketopropane |
| CAS Number | 67-64-1 |
| Appearance | Clear, colorless liquid with a characteristic sweet, pungent odor. Highly volatile at room temperature with a distinctive fruity smell. |
| Flash Point | -18°C (0°F) |
| Boiling Point | 56°C (133°F) |
| Vapor Density | 2.0 (heavier than air) |
| Water Reactivity | Miscible with water; no hazardous reaction. Acetone is fully soluble in water. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1090
Extinguishing Media
Alcohol-resistant foam (AR-AFFF), CO2, dry chemical, water spray (for cooling)
PPE Requirements
⚠️ Level B minimum for spills; SCBA and chemical-resistant suit for fire or confined space entry. Wear splash goggles and chemical gloves for handling.
Isolation & Evacuation
ERG 127: Isolate spill area minimum 50m in all directions. For large spill, isolate 150m and evacuate downwind 300m initially.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 127).
First Actions for a UN 1090 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.
- Consider initial downwind evacuation for at least 300 meters (1000 feet).
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UN 1090 — AcetoneHAZMAT RADIO NOTE — UN 1090
Product: Acetone
Class 3 / Flammable / ERG 127
PPE: Level B minimum for spills; SCBA and chemical-resistant suit for fire or confined space entry. Wear splash goggles and chemical gloves for handling.
ISOLATION: ERG 127: Isolate spill area minimum 50m in all directions. For large spill, isolate 150m and evacuate downwind 300m initially.
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 1090 — Acetone
Class: 3 | Placard: Flammable | ERG Guide: 127
Appearance: Clear, colorless liquid with a characteristic sweet, pungent odor. Highly volatile at room temperature with a distinctive fruity smell.
Water Reactivity: Miscible with water; no hazardous reaction. Acetone is fully soluble in water.
Extinguishing: Alcohol-resistant foam (AR-AFFF), CO2, dry chemical, water spray (for cooling)
PPE: Level B minimum for spills; SCBA and chemical-resistant suit for fire or confined space entry. Wear splash goggles and chemical gloves for handling.
Isolation: ERG 127: Isolate spill area minimum 50m in all directions. For large spill, isolate 150m and evacuate downwind 300m initially.
— 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 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/1090 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1090 Acetone Cls3 ERG127 | ERG 127: Isolate spill area minimum 50m in all directions. For large spill, isol | allfirefighter.com/hazmat/un/1090SMS / 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/1090
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Frequently Asked Questions about UN 1090
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.
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 for spills; SCBA and chemical-resistant suit for fire or confined space entry. Wear splash goggles and chemical gloves for handling.
Water reactivity: Miscible with water; no hazardous reaction. Acetone is fully soluble in water.. Recommended extinguishing: Alcohol-resistant foam (AR-AFFF), CO2, dry chemical, water spray (for cooling).
ERG Guide 127 recommendation: ERG 127: Isolate spill area minimum 50m in all directions. For large spill, isolate 150m and evacuate downwind 300m initially.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 127 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.