☣️ UN 3408 • CLASS 5
UN 3408 — Lead perchlorate, solution
Placard: Oxidizer. ERG Guide 141. 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 3408 Quick Details
UN 3408
Product name: Lead perchlorate, solution
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 141 (check current ERG)
Initial isolation: ERG 141: isolate spill 25-50m; if tank/rail car involved in fire, isolate 800m all directions and consider evacuation
Common Hazards of UN 3408
- These substances will accelerate burning when involved in a fire.
- May explode from heat or contamination.
- Some may burn rapidly.
- 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.
- Toxic by ingestion.
Chemical Identity & Physical Properties
| Also known as | Lead(II) perchlorate solutionPerchloric acid lead salt solutionLead diperchlorate solution |
| CAS Number | 13637-76-8 |
| Appearance | Clear to pale yellow aqueous solution with no distinct odor. Solution of white crystalline lead perchlorate salt dissolved in water. |
| Flash Point | Not applicable (aqueous solution) |
| Boiling Point | Approximately 100C (212F), similar to water depending on concentration |
| Vapor Density | Not applicable (aqueous solution) |
| Water Reactivity | Already in aqueous solution; dilution releases heat but no violent reaction |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3408
Extinguishing Media
Water spray, dry chemical, CO2; avoid organic materials and combustibles near oxidizer
PPE Requirements
⚠️ Level B minimum with chemical-resistant suit; SCBA required in fire or confined space; protect against skin contact
Isolation & Evacuation
ERG 141: isolate spill 25-50m; 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 141).
First Actions for a UN 3408 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 3408 — Lead perchlorate, solutionHAZMAT RADIO NOTE — UN 3408
Product: Lead perchlorate, solution
Class 5 / Oxidizer / ERG 141
PPE: Level B minimum with chemical-resistant suit; SCBA required in fire or confined space; protect against skin contact
ISOLATION: ERG 141: isolate spill 25-50m; 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 3408 — Lead perchlorate, solution
Class: 5 | Placard: Oxidizer | ERG Guide: 141
Appearance: Clear to pale yellow aqueous solution with no distinct odor. Solution of white crystalline lead perchlorate salt dissolved in water.
Water Reactivity: Already in aqueous solution; dilution releases heat but no violent reaction
Extinguishing: Water spray, dry chemical, CO2; avoid organic materials and combustibles near oxidizer
PPE: Level B minimum with chemical-resistant suit; SCBA required in fire or confined space; protect against skin contact
Isolation: ERG 141: isolate spill 25-50m; 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.
• May explode from heat or contamination.
• Some may burn rapidly.
— 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/3408 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3408 Lead perchlorate, solution Cls5 ERG141 | allfirefighter.com/hazmat/un/3408SMS / 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/3408
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Frequently Asked Questions about UN 3408
These substances will accelerate burning when involved in a fire. May explode from heat or contamination. Some may burn rapidly. 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. Toxic by ingestion.
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 with chemical-resistant suit; SCBA required in fire or confined space; protect against skin contact
Water reactivity: Already in aqueous solution; dilution releases heat but no violent reaction. Recommended extinguishing: Water spray, dry chemical, CO2; avoid organic materials and combustibles near oxidizer.
ERG Guide 141 recommendation: ERG 141: isolate spill 25-50m; 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 141 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.