☣️ UN 1171 • CLASS 3
UN 1171 — Ethylene glycol monoethyl ether
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.
Ethylene glycol monoethyl ether is a highly flammable liquid used in various industrial applications. It is miscible with water and most organic solvents.
Hazard overview: Ethylene glycol monoethyl ether is highly flammable and can form explosive mixtures with air. It is also toxic if ingested or inhaled.
Response guidance: In case of fire, use alcohol-resistant foam, CO2, dry chemical, or water spray for cooling. Evacuate the area and provide ventilation.
Advertisement
UN 1171 Quick Details
UN 1171
Product name: Ethylene glycol monoethyl ether
DOT Class: 3
Placard type: Flammable
ERG Guide: 127 (check current ERG)
Initial isolation: ERG 127: Small spill isolate 30m, large spill isolate 150m and evacuate 800m downwind; avoid skin contact due to systemic toxicity
Common Hazards of UN 1171
- 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
Ethylene glycol monoethyl ether is a clear, colorless liquid with a mild, sweet ether-like odor.
| Also known as | 2-EthoxyethanolEthyl cellosolveCellosolveEGEEEthyl glycolOxitol |
| CAS Number | 110-80-5 |
| Appearance | Clear, colorless liquid with a mild, sweet ether-like odor. Miscible with water and most organic solvents. |
| Flash Point | 43°C (110°F) |
| Boiling Point | 135°C (275°F) |
| Vapor Density | 3.1 (heavier than air) |
| Water Reactivity | No significant reaction; completely miscible with water |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1171
Extinguishing Media
Alcohol-resistant foam, CO2, dry chemical, water spray for cooling
PPE Requirements
⚠️ Level B minimum; full-face respirator with organic vapor cartridges or SCBA; chemical-resistant gloves and suit; absorbs through skin
Wear Level B minimum personal protective equipment, including a full-face respirator, chemical-resistant gloves, and suit.
Isolation & Evacuation
ERG 127: Small spill isolate 30m, large spill isolate 150m and evacuate 800m downwind; avoid skin contact due to systemic toxicity
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 127).
First Actions for a UN 1171 Incident
- 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).
Advertisement
📋 Copy & Share Field Card
UN 1171 — Ethylene glycol monoethyl etherHAZMAT RADIO NOTE — UN 1171
Product: Ethylene glycol monoethyl ether
Class 3 / Flammable / ERG 127
PPE: Level B minimum; full-face respirator with organic vapor cartridges or SCBA; chemical-resistant gloves and suit; absorbs through skin
ISOLATION: ERG 127: Small spill isolate 30m, large spill isolate 150m and evacuate 800m downwind; avoid skin contact due to systemic toxicity
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 1171 — Ethylene glycol monoethyl ether
Class: 3 | Placard: Flammable | ERG Guide: 127
Appearance: Clear, colorless liquid with a mild, sweet ether-like odor. Miscible with water and most organic solvents.
Water Reactivity: No significant reaction; completely miscible with water
Extinguishing: Alcohol-resistant foam, CO2, dry chemical, water spray for cooling
PPE: Level B minimum; full-face respirator with organic vapor cartridges or SCBA; chemical-resistant gloves and suit; absorbs through skin
Isolation: ERG 127: Small spill isolate 30m, large spill isolate 150m and evacuate 800m downwind; avoid skin contact due to systemic toxicity
— 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 —
• 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.
SOURCE: allfirefighter.com/hazmat/un/1171 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN1171 Ethylene glycol monoethyl ether Cls3 ERG127 | allfirefighter.com/hazmat/un/1171SMS / 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/ethylene-glycol-monoethyl-ether-un-1171
Advertisement
Frequently Asked Questions about UN 1171
Yes, UN 1171 is highly flammable and can form explosive mixtures with air.
No, water is not recommended for extinguishing fires involving UN 1171.
Wear Level B minimum personal protective equipment, including a full-face respirator, chemical-resistant gloves, and suit.
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.