☣️ UN 1950 • CLASS 2
UN 1950 — Aerosols
Placard: Non-Flammable Gas. ERG Guide 126. 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 1950 Quick Details
UN 1950
Product name: Aerosols
DOT Class: 2
Placard type: Non-Flammable Gas
ERG Guide: 126 (check current ERG)
Initial isolation: ERG 126: isolate spill/leak 25m all directions; if fire or large spill, isolate 800m all directions, consider evacuation
Common Hazards of UN 1950
- Some may burn but none ignite readily.
- Containers may explode when heated.
- Ruptured cylinders may rocket.
- Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas.
- Vapors from liquefied gas are initially heavier than air and spread along ground.
- Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
- Fire may produce irritating, corrosive and/or toxic gases.
Chemical Identity & Physical Properties
| Also known as | Aerosol cansSpray cansPressurized dispensersAerosol containersSpray containers |
| Appearance | Pressurized metal containers holding liquids or gases under pressure. Contents vary widely (paints, lubricants, cleaning products, personal care products). Container appearance varies by product. |
| Flash Point | Varies by contents; many flammable propellants have flash points below -18C (0F) |
| Boiling Point | Varies by propellant; typical propellants (propane, butane) range from -42C to -1C (-44F to 30F) |
| Vapor Density | Varies by contents; typical propellants heavier than air (1.5-2.0) |
| Water Reactivity | Generally no significant reaction with water, though contents vary |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1950
Extinguishing Media
CO2, dry chemical, water spray for cooling containers; foam effectiveness depends on contents
PPE Requirements
⚠️ Level D for intact containers; Level C minimum if leaking or damaged; SCBA if fire involved or contents unknown
Isolation & Evacuation
ERG 126: isolate spill/leak 25m all directions; if fire or large spill, isolate 800m all directions, consider evacuation
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 126).
First Actions for a UN 1950 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
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
- Consider initial downwind evacuation for at least 500 meters (1/3 mile).
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UN 1950 — AerosolsHAZMAT RADIO NOTE — UN 1950
Product: Aerosols
Class 2 / Non-Flammable Gas / ERG 126
PPE: Level D for intact containers; Level C minimum if leaking or damaged; SCBA if fire involved or contents unknown
ISOLATION: ERG 126: isolate spill/leak 25m all directions; if fire or large spill, isolate 800m all directions, 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 1950 — Aerosols
Class: 2 | Placard: Non-Flammable Gas | ERG Guide: 126
Appearance: Pressurized metal containers holding liquids or gases under pressure. Contents vary widely (paints, lubricants, cleaning products, personal care products). Container appearance varies by product.
Water Reactivity: Generally no significant reaction with water, though contents vary
Extinguishing: CO2, dry chemical, water spray for cooling containers; foam effectiveness depends on contents
PPE: Level D for intact containers; Level C minimum if leaking or damaged; SCBA if fire involved or contents unknown
Isolation: ERG 126: isolate spill/leak 25m all directions; if fire or large spill, isolate 800m all directions, consider evacuation
— Key Hazards —
• Some may burn but none ignite readily.
• Containers may explode when heated.
• Ruptured cylinders may rocket.
— 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/1950 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1950 Aerosols Cls2 ERG126 | ERG 126: isolate spill/leak 25m all directions; if fire or large spill, isolate | allfirefighter.com/hazmat/un/1950SMS / 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/1950
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Frequently Asked Questions about UN 1950
Some may burn but none ignite readily. Containers may explode when heated. Ruptured cylinders may rocket. Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas. Vapors from liquefied gas are initially heavier than air and spread along ground. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating, corrosive and/or toxic gases.
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 D for intact containers; Level C minimum if leaking or damaged; SCBA if fire involved or contents unknown
Water reactivity: Generally no significant reaction with water, though contents vary. Recommended extinguishing: CO2, dry chemical, water spray for cooling containers; foam effectiveness depends on contents.
ERG Guide 126 recommendation: ERG 126: isolate spill/leak 25m all directions; if fire or large spill, isolate 800m all directions, consider evacuation
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 126 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.