☣️ UN 2014 • CLASS 5
UN 2014 — Hydrogen peroxide, aqueous solution, with not less than 20% but not more than 60% hydrogen peroxide (stabilized as necessary)
Placard: Oxidizer. ERG Guide 140. 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 2014 Quick Details
UN 2014
Product name: Hydrogen peroxide, aqueous solution, with not less than 20% but not more than 60% hydrogen peroxide (stabilized as necessary)
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 140 (check current ERG)
Initial isolation: ERG 140: isolate spill area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation
Common Hazards of UN 2014
- These substances will accelerate burning when involved in a fire.
- Some may decompose explosively when heated or involved in a fire.
- May explode from heat or contamination.
- Some will react explosively with hydrocarbons (fuels).
- May ignite combustibles (wood, paper, oil, clothing, etc.).
- Containers may explode when heated.
- Runoff may create fire or explosion hazard.
- Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or
Chemical Identity & Physical Properties
| Also known as | Hydrogen dioxidePeroxideHydrogen peroxide solutionHydroperoxideAlbone |
| CAS Number | 7722-84-1 |
| Appearance | Clear, colorless liquid with a slightly sharp odor. Solutions are stabilized to prevent decomposition. Concentrations in this range (20-60%) are strong oxidizers. |
| Flash Point | Not applicable (non-flammable oxidizer) |
| Boiling Point | 108C (226F) for 35% solution; varies with concentration |
| Vapor Density | 1.4 (heavier than air) |
| Water Reactivity | Miscible with water; dilution generates heat but is generally safe |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2014
Extinguishing Media
Water spray, dry chemical, CO2; avoid organic materials and combustibles
PPE Requirements
⚠️ Level B minimum; SCBA required; chemical-resistant suit; face shield and rubber gloves; avoid contact with skin and eyes
Isolation & Evacuation
ERG 140: isolate spill area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 140).
First Actions for a UN 2014 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.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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📋 Copy & Share Field Card
UN 2014 — Hydrogen peroxide, aqueous solution, witHAZMAT RADIO NOTE — UN 2014
Product: Hydrogen peroxide, aqueous solution, with not less than 20% but not more than 60% hydrogen peroxide (stabilized as necessary)
Class 5 / Oxidizer / ERG 140
PPE: Level B minimum; SCBA required; chemical-resistant suit; face shield and rubber gloves; avoid contact with skin and eyes
ISOLATION: ERG 140: isolate spill area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and 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 2014 — Hydrogen peroxide, aqueous solution, with not less than 20% but not more than 60% hydrogen peroxide (stabilized as necessary)
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: Clear, colorless liquid with a slightly sharp odor. Solutions are stabilized to prevent decomposition. Concentrations in this range (20-60%) are strong oxidizers.
Water Reactivity: Miscible with water; dilution generates heat but is generally safe
Extinguishing: Water spray, dry chemical, CO2; avoid organic materials and combustibles
PPE: Level B minimum; SCBA required; chemical-resistant suit; face shield and rubber gloves; avoid contact with skin and eyes
Isolation: ERG 140: isolate spill area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation
— Key Hazards —
• These substances will accelerate burning when involved in a fire.
• Some may decompose explosively when heated or involved in a fire.
• May explode from heat or contamination.
— 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.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/2014 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2014 Hydrogen peroxide, aqueous solution, with not less than 20% but not more than 60% hydrogen peroxide (stabilized as necessary) Cls5 ERG140 | allfirefighter.com/hazmat/un/2014SMS / 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/2014
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Frequently Asked Questions about UN 2014
These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard. Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or
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; SCBA required; chemical-resistant suit; face shield and rubber gloves; avoid contact with skin and eyes
Water reactivity: Miscible with water; dilution generates heat but is generally safe. Recommended extinguishing: Water spray, dry chemical, CO2; avoid organic materials and combustibles.
ERG Guide 140 recommendation: ERG 140: isolate spill area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 140 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.