☣️ UN 2243 • CLASS 3
UN 2243 — Cyclohexyl acetate
Placard: Flammable. ERG Guide 130. 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 2243 Quick Details
UN 2243
Product name: Cyclohexyl acetate
DOT Class: 3
Placard type: Flammable
ERG Guide: 130 (check current ERG)
Initial isolation: ERG 130: Small spill isolate 30m all directions; large spill/fire isolate 150m, evacuate 800m downwind
Common Hazards of UN 2243
- 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 | Acetic acid cyclohexyl esterCyclohexanol acetateHexahydrophenyl acetate |
| CAS Number | 622-45-7 |
| Appearance | Clear, colorless liquid with a mild, fruity odor. Less dense than water and insoluble in water. |
| Flash Point | 58°C (136°F) |
| Boiling Point | 173°C (343°F) |
| Vapor Density | 4.9 (heavier than air) |
| Water Reactivity | No significant reaction; insoluble in water but floats on surface |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2243
Extinguishing Media
AFFF, alcohol-resistant foam, CO2, dry chemical, water spray for cooling
PPE Requirements
⚠️ Level B minimum for spill response; full structural firefighting gear with SCBA for fire situations
Isolation & Evacuation
ERG 130: Small spill isolate 30m all directions; large spill/fire isolate 150m, evacuate 800m downwind
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 130).
First Actions for a UN 2243 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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📋 Copy & Share Field Card
UN 2243 — Cyclohexyl acetateHAZMAT RADIO NOTE — UN 2243
Product: Cyclohexyl acetate
Class 3 / Flammable / ERG 130
PPE: Level B minimum for spill response; full structural firefighting gear with SCBA for fire situations
ISOLATION: ERG 130: Small spill isolate 30m all directions; large spill/fire isolate 150m, evacuate 800m downwind
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 2243 — Cyclohexyl acetate
Class: 3 | Placard: Flammable | ERG Guide: 130
Appearance: Clear, colorless liquid with a mild, fruity odor. Less dense than water and insoluble in water.
Water Reactivity: No significant reaction; insoluble in water but floats on surface
Extinguishing: AFFF, alcohol-resistant foam, CO2, dry chemical, water spray for cooling
PPE: Level B minimum for spill response; full structural firefighting gear with SCBA for fire situations
Isolation: ERG 130: Small spill isolate 30m all directions; large spill/fire isolate 150m, evacuate 800m downwind
— 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/2243 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2243 Cyclohexyl acetate Cls3 ERG130 | ERG 130: Small spill isolate 30m all directions; large spill/fire isolate 150m, | allfirefighter.com/hazmat/un/2243SMS / 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/2243
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Frequently Asked Questions about UN 2243
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 spill response; full structural firefighting gear with SCBA for fire situations
Water reactivity: No significant reaction; insoluble in water but floats on surface. Recommended extinguishing: AFFF, alcohol-resistant foam, CO2, dry chemical, water spray for cooling.
ERG Guide 130 recommendation: ERG 130: Small spill isolate 30m all directions; large spill/fire isolate 150m, evacuate 800m downwind
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 130 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.