☣️ UN 1006 • CLASS 2
UN 1006 — Argon, compressed
Placard: Non-Flammable Gas. ERG Guide 120. 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 1006 Quick Details
UN 1006
Product name: Argon, compressed
DOT Class: 2
Placard type: Non-Flammable Gas
ERG Guide: 120 (check current ERG)
Initial isolation: ERG 120: no evacuation distances for small spills; for large spills isolate 100m in all directions; asphyxiation hazard in confined spaces
Common Hazards of UN 1006
- 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, liquefied gas or cryogenic liquids may cause burns, severe injury and/or frostbite.
- Non-flammable gases.
- Containers may explode when heated.
- Ruptured cylinders may rocket.
Chemical Identity & Physical Properties
| Also known as | Argon gasCompressed argonRefrigerated argonAr |
| CAS Number | 7440-37-1 |
| Appearance | Colorless, odorless, tasteless inert gas. Shipped as a compressed gas or cryogenic liquid. Heavier than air. |
| Flash Point | Not applicable (inert gas) |
| Boiling Point | -186C (-303F) |
| Vapor Density | 1.4 (heavier than air) |
| Water Reactivity | No reaction; inert gas |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1006
Extinguishing Media
Not applicable for fire suppression; argon itself is inert
PPE Requirements
⚠️ Level D for routine handling; SCBA required in confined spaces or oxygen-deficient atmospheres; insulated gloves for cryogenic liquid
Isolation & Evacuation
ERG 120: no evacuation distances for small spills; for large spills isolate 100m in all directions; asphyxiation hazard in confined spaces
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 120).
First Actions for a UN 1006 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 100 meters (330 feet).
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📋 Copy & Share Field Card
UN 1006 — Argon, compressedHAZMAT RADIO NOTE — UN 1006
Product: Argon, compressed
Class 2 / Non-Flammable Gas / ERG 120
PPE: Level D for routine handling; SCBA required in confined spaces or oxygen-deficient atmospheres; insulated gloves for cryogenic liquid
ISOLATION: ERG 120: no evacuation distances for small spills; for large spills isolate 100m in all directions; asphyxiation hazard in confined spaces
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 1006 — Argon, compressed
Class: 2 | Placard: Non-Flammable Gas | ERG Guide: 120
Appearance: Colorless, odorless, tasteless inert gas. Shipped as a compressed gas or cryogenic liquid. Heavier than air.
Water Reactivity: No reaction; inert gas
Extinguishing: Not applicable for fire suppression; argon itself is inert
PPE: Level D for routine handling; SCBA required in confined spaces or oxygen-deficient atmospheres; insulated gloves for cryogenic liquid
Isolation: ERG 120: no evacuation distances for small spills; for large spills isolate 100m in all directions; asphyxiation hazard in confined spaces
— Key Hazards —
• 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, liquefied gas or cryogenic liquids may cause burns, severe injury and/or frostbite.
— 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/1006 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1006 Argon, compressed Cls2 ERG120 | ERG 120: no evacuation distances for small spills; for large spills isolate 100m | allfirefighter.com/hazmat/un/1006SMS / 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/1006
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Frequently Asked Questions about UN 1006
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, liquefied gas or cryogenic liquids may cause burns, severe injury and/or frostbite. Non-flammable gases. 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 D for routine handling; SCBA required in confined spaces or oxygen-deficient atmospheres; insulated gloves for cryogenic liquid
Water reactivity: No reaction; inert gas. Recommended extinguishing: Not applicable for fire suppression; argon itself is inert.
ERG Guide 120 recommendation: ERG 120: no evacuation distances for small spills; for large spills isolate 100m in all directions; asphyxiation hazard in confined spaces
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 120 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.