☣️ UN 2037 • CLASS 2
Receptacles, small, containing gas
Placard: Non-Flammable Gas. 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.
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Quick details
UN 2037
Class: 2
Placard type: Non-Flammable Gas
ERG: Guide 115 (check current ERG)
Isolation: ERG 115: isolate spill/leak area immediately 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind
Chemical & Response Details
| Also known as | Gas cartridgesAerosol dispensersSmall gas cylindersPressurized gas containersDisposable gas canisters |
| Appearance | Small metal or composite containers holding compressed or liquefied gases under pressure. May be aerosol cans, camping fuel cartridges, or other small pressurized vessels. Contents vary widely. |
| Flash Point | Varies by contents - typically highly flammable gases with no flash point (gas phase) |
| Boiling Point | Varies by contents - typically below room temperature for liquefied gases |
| Vapor Density | Varies by contents - typically heavier than air for hydrocarbon gases |
| Water Reactivity | Generally no reaction with water, though contents may vary |
| Extinguishing | Water spray to cool containers, CO2, dry chemical, avoid direct water stream on release point |
| PPE | ⚠️ Level B minimum if large release; SCBA required in enclosed spaces or fire conditions; thermal protection for fire exposure |
| Isolation | ERG 115: isolate spill/leak area immediately 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind |
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 2037 — Receptacles, small, containing gas HAZMAT RADIO NOTE — UN 2037
Product: Receptacles, small, containing gas
Class 2 / Non-Flammable Gas / ERG 115
PPE: Level B minimum if large release; SCBA required in enclosed spaces or fire conditions; thermal protection for fire exposure
ISOLATION: ERG 115: isolate spill/leak area immediately 25-50m in all directions; if fire or large spill, isolate 800m and evacuate 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 2037 — Receptacles, small, containing gas
Class: 2 | Placard: Non-Flammable Gas | ERG Guide: 115
Appearance: Small metal or composite containers holding compressed or liquefied gases under pressure. May be aerosol cans, camping fuel cartridges, or other small pressurized vessels. Contents vary widely.
Water Reactivity: Generally no reaction with water, though contents may vary
Extinguishing: Water spray to cool containers, CO2, dry chemical, avoid direct water stream on release point
PPE: Level B minimum if large release; SCBA required in enclosed spaces or fire conditions; thermal protection for fire exposure
Isolation: ERG 115: isolate spill/leak area immediately 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind
— 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/2037 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2037 Receptacles, small, containing gas Cls2 ERG115 | allfirefighter.com/hazmat/un/2037SMS / 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/2037
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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 if large release; SCBA required in enclosed spaces or fire conditions; thermal protection for fire exposure
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.