☣️ UN 2377 • CLASS 3
1,1-Dimethoxyethane
Placard: Flammable. 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.
Advertisement
Quick details
UN 2377
Class: 3
Placard type: Flammable
ERG: Guide 127 (check current ERG)
Isolation: ERG 127: Isolate spill area immediate 50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation
Chemical & Response Details
| Also known as | Ethylidene dimethyl etherAcetaldehyde dimethyl acetalDimethyl acetalEthylidene methyl ether |
| CAS Number | 534-15-6 |
| Appearance | Colorless liquid with a mild, pleasant, ethereal odor. Less dense than water and volatile at room temperature. |
| Flash Point | -21C (-6F) |
| Boiling Point | 64C (147F) |
| Vapor Density | 3.1 (heavier than air) |
| Water Reactivity | No significant reaction with water; miscible but does not react violently |
| Extinguishing | Alcohol-resistant foam (AR-AFFF), CO2, dry chemical, water spray for cooling |
| PPE | ⚠️ Level B minimum; SCBA required in vapor/fire conditions; chemical-resistant gloves and splash protection |
| Isolation | ERG 127: Isolate spill area immediate 50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- 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.
First actions (field-minded)
- 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).
Advertisement
📋 Copy & Share
UN 2377 — 1,1-Dimethoxyethane HAZMAT RADIO NOTE — UN 2377
Product: 1,1-Dimethoxyethane
Class 3 / Flammable / ERG 127
PPE: Level B minimum; SCBA required in vapor/fire conditions; chemical-resistant gloves and splash protection
ISOLATION: ERG 127: Isolate spill area immediate 50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation
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 2377 — 1,1-Dimethoxyethane
Class: 3 | Placard: Flammable | ERG Guide: 127
Appearance: Colorless liquid with a mild, pleasant, ethereal odor. Less dense than water and volatile at room temperature.
Water Reactivity: No significant reaction with water; miscible but does not react violently
Extinguishing: Alcohol-resistant foam (AR-AFFF), CO2, dry chemical, water spray for cooling
PPE: Level B minimum; SCBA required in vapor/fire conditions; chemical-resistant gloves and splash protection
Isolation: ERG 127: Isolate spill area immediate 50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation
— 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/2377 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2377 1,1-Dimethoxyethane Cls3 ERG127 | ERG 127: Isolate spill area immediate 50m all directions; if tank/rail car invol | allfirefighter.com/hazmat/un/2377SMS / 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/2377
Advertisement
FAQ
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; SCBA required in vapor/fire conditions; chemical-resistant gloves and splash protection
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.