☣️ UN 1472 • CLASS 5
UN 1472 — Lithium peroxide
Placard: Oxidizer. ERG Guide 143. 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 1472 Quick Details
UN 1472
Product name: Lithium peroxide
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 143 (check current ERG)
Initial isolation: ERG 143: Isolate spill area 25-50m all directions. For large spill isolate 100m initially. Evacuate downwind if fire develops.
Common Hazards of UN 1472
- May explode from friction, heat or contamination.
- These substances will accelerate burning when involved in a fire.
- May ignite combustibles (wood, paper, oil, clothing, etc.).
- Some will react explosively with hydrocarbons (fuels).
- Containers may explode when heated.
- Runoff may create fire or explosion hazard.
- TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe
- Fire may produce irritating and/or toxic gases.
Chemical Identity & Physical Properties
| Also known as | Lithium peroxideDilithium peroxideLithium oxide peroxidePeroxyde de lithium |
| CAS Number | 12031-80-0 |
| Appearance | White to yellowish-white granular powder or crystalline solid. Odorless. Stable when dry but decomposes slowly in air. |
| Flash Point | Not applicable (oxidizing solid) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Reacts violently with water producing heat, oxygen, and corrosive lithium hydroxide. Do not use water on material. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1472
Extinguishing Media
Dry sand, dry chemical, soda ash. Do NOT use water, foam, or CO2.
PPE Requirements
⚠️ Level B minimum recommended. Full face respirator or SCBA. Avoid all contact. Chemical-resistant gloves and suit required.
Isolation & Evacuation
ERG 143: Isolate spill area 25-50m all directions. For large spill isolate 100m initially. Evacuate downwind if fire develops.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 143).
First Actions for a UN 1472 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
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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📋 Copy & Share Field Card
UN 1472 — Lithium peroxideHAZMAT RADIO NOTE — UN 1472
Product: Lithium peroxide
Class 5 / Oxidizer / ERG 143
PPE: Level B minimum recommended. Full face respirator or SCBA. Avoid all contact. Chemical-resistant gloves and suit required.
ISOLATION: ERG 143: Isolate spill area 25-50m all directions. For large spill isolate 100m initially. Evacuate downwind if fire develops.
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 1472 — Lithium peroxide
Class: 5 | Placard: Oxidizer | ERG Guide: 143
Appearance: White to yellowish-white granular powder or crystalline solid. Odorless. Stable when dry but decomposes slowly in air.
Water Reactivity: Reacts violently with water producing heat, oxygen, and corrosive lithium hydroxide. Do not use water on material.
Extinguishing: Dry sand, dry chemical, soda ash. Do NOT use water, foam, or CO2.
PPE: Level B minimum recommended. Full face respirator or SCBA. Avoid all contact. Chemical-resistant gloves and suit required.
Isolation: ERG 143: Isolate spill area 25-50m all directions. For large spill isolate 100m initially. Evacuate downwind if fire develops.
— Key Hazards —
• May explode from friction, heat or contamination.
• These substances will accelerate burning when involved in a fire.
• 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.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/1472 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1472 Lithium peroxide Cls5 ERG143 | ERG 143: Isolate spill area 25-50m all directions. For large spill isolate 100m | allfirefighter.com/hazmat/un/1472SMS / 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/1472
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Frequently Asked Questions about UN 1472
May explode from friction, heat or contamination. These substances will accelerate burning when involved in a fire. May ignite combustibles (wood, paper, oil, clothing, etc.). Some will react explosively with hydrocarbons (fuels). Containers may explode when heated. Runoff may create fire or explosion hazard. TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe Fire may produce irritating 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 B minimum recommended. Full face respirator or SCBA. Avoid all contact. Chemical-resistant gloves and suit required.
Water reactivity: Reacts violently with water producing heat, oxygen, and corrosive lithium hydroxide. Do not use water on material.. Recommended extinguishing: Dry sand, dry chemical, soda ash. Do NOT use water, foam, or CO2..
ERG Guide 143 recommendation: ERG 143: Isolate spill area 25-50m all directions. For large spill isolate 100m initially. Evacuate downwind if fire develops.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 143 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.