☣️ UN 1961 • CLASS 2
Ethane-propane mixture, refrigerated liquid
Placard: Flammable Gas. 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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Quick details
UN 1961
Class: 2
Placard type: Flammable Gas
ERG: Guide 115 (check current ERG)
Isolation: ERG 115: isolate 800m all directions for spill, evacuate 1600m downwind if tank fire or rupture risk
Chemical & Response Details
| Also known as | LPG mixturerefrigerated LP gasliquefied petroleum gas blendcryogenic ethane-propane |
| Appearance | Colorless cryogenic liquid with faint hydrocarbon odor. Rapidly vaporizes to gas at ambient temperature and pressure. |
| Flash Point | Not applicable (cryogenic gas mixture, ignites readily below -100C) |
| Boiling Point | Approximately -89C to -42C (-128F to -44F) depending on mixture ratio |
| Vapor Density | 1.0-1.6 (heavier than air) |
| Water Reactivity | No reaction with water, but extreme cold can cause ice formation |
| Extinguishing | CO2, dry chemical, water spray for cooling only; avoid direct water contact due to cryogenic temperature |
| PPE | ⚠️ Level B minimum with cryogenic gloves and face shield; SCBA required in vapor cloud; protect skin from frostbite contact |
| Isolation | ERG 115: isolate 800m all directions for spill, evacuate 1600m downwind if tank fire or rupture risk |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- EXTREMELY FLAMMABLE.
- Will be easily ignited by heat, sparks or flames.
- Will form explosive mixtures with air.
- Vapors from liquefied gas are initially heavier than air and spread along ground.
- Vapors may travel to source of ignition and flash back.
- Cylinders exposed to fire may vent and release flammable gas through pressure relief devices.
- Containers may explode when heated.
- Ruptured cylinders may rocket.
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.
- Many gases are heavier than air and will spread along the ground and collect in low or confined areas
- Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
- Consider initial downwind evacuation for at least 800 meters (1/2 mile).
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UN 1961 — Ethane-propane mixture, refrigerated liq HAZMAT RADIO NOTE — UN 1961
Product: Ethane-propane mixture, refrigerated liquid
Class 2 / Flammable Gas / ERG 115
PPE: Level B minimum with cryogenic gloves and face shield; SCBA required in vapor cloud; protect skin from frostbite contact
ISOLATION: ERG 115: isolate 800m all directions for spill, evacuate 1600m downwind if tank fire or rupture risk
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 1961 — Ethane-propane mixture, refrigerated liquid
Class: 2 | Placard: Flammable Gas | ERG Guide: 115
Appearance: Colorless cryogenic liquid with faint hydrocarbon odor. Rapidly vaporizes to gas at ambient temperature and pressure.
Water Reactivity: No reaction with water, but extreme cold can cause ice formation
Extinguishing: CO2, dry chemical, water spray for cooling only; avoid direct water contact due to cryogenic temperature
PPE: Level B minimum with cryogenic gloves and face shield; SCBA required in vapor cloud; protect skin from frostbite contact
Isolation: ERG 115: isolate 800m all directions for spill, evacuate 1600m downwind if tank fire or rupture risk
— Key Hazards —
• EXTREMELY FLAMMABLE.
• Will be easily ignited by heat, sparks or flames.
• Will form explosive mixtures with air.
— 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.
• Many gases are heavier than air and will spread along the ground and collect in low or confined areas
SOURCE: allfirefighter.com/hazmat/un/1961 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1961 Ethane-propane mixture, refrigerated liquid Cls2 ERG115 | allfirefighter.com/hazmat/un/1961SMS / 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/1961
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FAQ
EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket.
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 with cryogenic gloves and face shield; SCBA required in vapor cloud; protect skin from frostbite contact
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 115 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.