☣️ UN 1070 • CLASS 2
UN 1070 — Nitrous oxide, compressed
Placard: Non-Flammable Gas. ERG Guide 122. 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 1070 Quick Details
UN 1070
Product name: Nitrous oxide, compressed
DOT Class: 2
Placard type: Non-Flammable Gas
ERG Guide: 122 (check current ERG)
Initial isolation: ERG 122: isolate 100m all directions initially; if tank/railcar involved in fire, isolate 800m in all directions
Common Hazards of UN 1070
- Substance does not burn but will support combustion.
- Some may react explosively with fuels.
- May ignite combustibles (wood, paper, oil, clothing, etc.).
- Vapors from liquefied gas are initially heavier than air and spread along ground.
- Runoff may create fire or explosion hazard.
- Containers may explode when heated.
- Ruptured cylinders may rocket.
- Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas.
Chemical Identity & Physical Properties
| Also known as | Dinitrogen monoxideLaughing gasNitrogen oxideN2ONitrous oxide gas |
| CAS Number | 10024-97-2 |
| Appearance | Colorless, sweet-smelling, non-flammable gas at room temperature. Stored as a liquefied compressed gas under pressure. |
| Flash Point | Not applicable (non-flammable gas) |
| Boiling Point | -88C (-127F) |
| Vapor Density | 1.5 (heavier than air) |
| Water Reactivity | No significant reaction with water |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1070
Extinguishing Media
Not applicable for extinguishing (non-flammable); use water spray to cool cylinders exposed to fire
PPE Requirements
⚠️ Level C minimum; SCBA required in confined spaces or high concentrations; thermal gloves for handling cold cylinders
Isolation & Evacuation
ERG 122: isolate 100m all directions initially; if tank/railcar involved in fire, isolate 800m in all directions
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 122).
First Actions for a UN 1070 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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📋 Copy & Share Field Card
UN 1070 — Nitrous oxide, compressedHAZMAT RADIO NOTE — UN 1070
Product: Nitrous oxide, compressed
Class 2 / Non-Flammable Gas / ERG 122
PPE: Level C minimum; SCBA required in confined spaces or high concentrations; thermal gloves for handling cold cylinders
ISOLATION: ERG 122: isolate 100m all directions initially; if tank/railcar involved in fire, isolate 800m in all directions
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 1070 — Nitrous oxide, compressed
Class: 2 | Placard: Non-Flammable Gas | ERG Guide: 122
Appearance: Colorless, sweet-smelling, non-flammable gas at room temperature. Stored as a liquefied compressed gas under pressure.
Water Reactivity: No significant reaction with water
Extinguishing: Not applicable for extinguishing (non-flammable); use water spray to cool cylinders exposed to fire
PPE: Level C minimum; SCBA required in confined spaces or high concentrations; thermal gloves for handling cold cylinders
Isolation: ERG 122: isolate 100m all directions initially; if tank/railcar involved in fire, isolate 800m in all directions
— Key Hazards —
• Substance does not burn but will support combustion.
• Some may react explosively with fuels.
• May ignite combustibles (wood, paper, oil, clothing, etc.).
— 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/1070 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1070 Nitrous oxide, compressed Cls2 ERG122 | allfirefighter.com/hazmat/un/1070SMS / 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/1070
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Frequently Asked Questions about UN 1070
Substance does not burn but will support combustion. Some may react explosively with fuels. May ignite combustibles (wood, paper, oil, clothing, etc.). Vapors from liquefied gas are initially heavier than air and spread along ground. Runoff may create fire or explosion hazard. Containers may explode when heated. Ruptured cylinders may rocket. Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas.
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 C minimum; SCBA required in confined spaces or high concentrations; thermal gloves for handling cold cylinders
Water reactivity: No significant reaction with water. Recommended extinguishing: Not applicable for extinguishing (non-flammable); use water spray to cool cylinders exposed to fire.
ERG Guide 122 recommendation: ERG 122: isolate 100m all directions initially; if tank/railcar involved in fire, isolate 800m in all directions
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 122 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.