☣️ UN 2612 • CLASS 3
UN 2612 — Methyl propyl ether
Placard: Flammable. ERG Guide 127. 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 2612 Quick Details
UN 2612
Product name: Methyl propyl ether
DOT Class: 3
Placard type: Flammable
ERG Guide: 127 (check current ERG)
Initial isolation: ERG 127: Initial isolation 50m in all directions; protective action distance 0.3km day/0.5km night for large spill
Common Hazards of UN 2612
- 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 | 1-MethoxypropanePropyl methyl etherMethoxypropanen-Propyl methyl ether |
| CAS Number | 557-17-5 |
| Appearance | Colorless liquid with a sweet, ether-like odor. Volatile and highly flammable at room temperature. |
| Flash Point | -20°C (-4°F) |
| Boiling Point | 39°C (102°F) |
| Vapor Density | 2.5 (heavier than air) |
| Water Reactivity | No significant reaction; slightly soluble in water |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2612
Extinguishing Media
AFFF foam, CO2, dry chemical, water spray for cooling
PPE Requirements
⚠️ Level B minimum; SCBA required in confined spaces or heavy vapor concentrations
Isolation & Evacuation
ERG 127: Initial isolation 50m in all directions; protective action distance 0.3km day/0.5km night for large spill
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 127).
First Actions for a UN 2612 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 2612 — Methyl propyl etherHAZMAT RADIO NOTE — UN 2612
Product: Methyl propyl ether
Class 3 / Flammable / ERG 127
PPE: Level B minimum; SCBA required in confined spaces or heavy vapor concentrations
ISOLATION: ERG 127: Initial isolation 50m in all directions; protective action distance 0.3km day/0.5km night for large spill
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 2612 — Methyl propyl ether
Class: 3 | Placard: Flammable | ERG Guide: 127
Appearance: Colorless liquid with a sweet, ether-like odor. Volatile and highly flammable at room temperature.
Water Reactivity: No significant reaction; slightly soluble in water
Extinguishing: AFFF foam, CO2, dry chemical, water spray for cooling
PPE: Level B minimum; SCBA required in confined spaces or heavy vapor concentrations
Isolation: ERG 127: Initial isolation 50m in all directions; protective action distance 0.3km day/0.5km night for large spill
— 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/2612 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2612 Methyl propyl ether Cls3 ERG127 | ERG 127: Initial isolation 50m in all directions; protective action distance 0.3 | allfirefighter.com/hazmat/un/2612SMS / 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/2612
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Frequently Asked Questions about UN 2612
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 confined spaces or heavy vapor concentrations
Water reactivity: No significant reaction; slightly soluble in water. Recommended extinguishing: AFFF foam, CO2, dry chemical, water spray for cooling.
ERG Guide 127 recommendation: ERG 127: Initial isolation 50m in all directions; protective action distance 0.3km day/0.5km night for large spill
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.