☣️ UN 1872 • CLASS 5
Lead dioxide
Placard: Oxidizer. 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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Quick details
UN 1872
Class: 5
Placard type: Oxidizer
ERG: Guide 140 (check current ERG)
Isolation: ERG 140: Isolate spill area immediately for at least 25-50m in all directions. If fire or explosion risk, consider initial evacuation for 800m in all directions.
Chemical & Response Details
| Also known as | Lead(IV) oxidePlumbic oxideLead peroxideLead superoxideDioxide de plomb |
| CAS Number | 1309-60-0 |
| Appearance | Dark brown to black crystalline powder or granules. Odorless solid at room temperature. |
| Flash Point | Not applicable (non-combustible oxidizing solid) |
| Boiling Point | Decomposes at 290C (554F), does not boil |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Slight reaction with water; may release heat. Avoid contact with organic materials. |
| Extinguishing | Dry sand, dry chemical, or soda ash. Do not use combustible materials. Water spray may be used to cool containers. |
| PPE | ⚠️ Level B minimum; SCBA required in fire or decomposition situations. Full protective clothing to prevent skin contact. |
| Isolation | ERG 140: Isolate spill area immediately for at least 25-50m in all directions. If fire or explosion risk, consider initial evacuation for 800m in all directions. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- 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
First actions (field-minded)
- 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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UN 1872 — Lead dioxide HAZMAT RADIO NOTE — UN 1872
Product: Lead dioxide
Class 5 / Oxidizer / ERG 140
PPE: Level B minimum; SCBA required in fire or decomposition situations. Full protective clothing to prevent skin contact.
ISOLATION: ERG 140: Isolate spill area immediately for at least 25-50m in all directions. If fire or explosion risk, consider initial evacuation for 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 1872 — Lead dioxide
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: Dark brown to black crystalline powder or granules. Odorless solid at room temperature.
Water Reactivity: Slight reaction with water; may release heat. Avoid contact with organic materials.
Extinguishing: Dry sand, dry chemical, or soda ash. Do not use combustible materials. Water spray may be used to cool containers.
PPE: Level B minimum; SCBA required in fire or decomposition situations. Full protective clothing to prevent skin contact.
Isolation: ERG 140: Isolate spill area immediately for at least 25-50m in all directions. If fire or explosion risk, consider initial evacuation for 800m in all directions.
— 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/1872 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1872 Lead dioxide Cls5 ERG140 | ERG 140: Isolate spill area immediately for at least 25-50m in all directions. I | allfirefighter.com/hazmat/un/1872SMS / 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/1872
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FAQ
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 in fire or decomposition situations. Full protective clothing to prevent skin contact.
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.