☣️ UN 2037 • CLASS 2
UN 2037 — Receptacles, small, containing gas
Placard: Non-Flammable Gas. ERG Guide 115. 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 2037 Quick Details
UN 2037
Product name: Receptacles, small, containing gas
DOT Class: 2
Placard type: Non-Flammable Gas
ERG Guide: 115 (check current ERG)
Initial isolation: ERG 115: isolate spill/leak area immediately 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind
Common Hazards of UN 2037
- 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.
Chemical Identity & Physical Properties
| 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 |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2037
Extinguishing Media
Water spray to cool containers, CO2, dry chemical, avoid direct water stream on release point
PPE Requirements
⚠️ Level B minimum if large release; SCBA required in enclosed spaces or fire conditions; thermal protection for fire exposure
Isolation & Evacuation
ERG 115: isolate spill/leak area immediately 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 115).
First Actions for a UN 2037 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.
- 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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📋 Copy & Share Field Card
UN 2037 — Receptacles, small, containing gasHAZMAT 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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Frequently Asked Questions about UN 2037
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
Water reactivity: Generally no reaction with water, though contents may vary. Recommended extinguishing: Water spray to cool containers, CO2, dry chemical, avoid direct water stream on release point.
ERG Guide 115 recommendation: ERG 115: isolate spill/leak area immediately 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind
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.