☣️ UN 3214 • CLASS 5
UN 3214 — Permanganates, inorganic, aqueous solution, n.o.s.
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 3214 Quick Details
UN 3214
Product name: Permanganates, inorganic, aqueous solution, n.o.s.
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 140 (check current ERG)
Initial isolation: ERG 140: Initial isolation 50m in all directions; if tank/rail car involved in fire, isolate 800m in all directions and consider evacuation
Common Hazards of UN 3214
- 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 | Potassium permanganate solutionSodium permanganate solutionPermanganate salt solutionsManganate(VII) solutions |
| Appearance | Aqueous solutions typically purple to dark violet in color, odorless to slight earthy odor. Liquid at room temperature with characteristic intense purple coloration from permanganate ion. |
| Flash Point | Not applicable (aqueous solution, non-flammable) |
| Boiling Point | Approximately 100C (212F), similar to water depending on concentration |
| Vapor Density | Not applicable (aqueous solution) |
| Water Reactivity | Already dissolved in water; strong oxidizer, reacts with organic materials and reducing agents |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3214
Extinguishing Media
Water spray, fog. DO NOT use foam or CO2 on bulk material. Use water to cool containers and dilute spills.
PPE Requirements
⚠️ Level B minimum with SCBA; full face shield, chemical-resistant gloves and apron required due to strong oxidizing and staining properties
Isolation & Evacuation
ERG 140: Initial isolation 50m in all directions; if tank/rail car involved in fire, isolate 800m in 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 3214 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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UN 3214 — Permanganates, inorganic, aqueous solutiHAZMAT RADIO NOTE — UN 3214
Product: Permanganates, inorganic, aqueous solution, n.o.s.
Class 5 / Oxidizer / ERG 140
PPE: Level B minimum with SCBA; full face shield, chemical-resistant gloves and apron required due to strong oxidizing and staining properties
ISOLATION: ERG 140: Initial isolation 50m in all directions; if tank/rail car involved in fire, isolate 800m in 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 3214 — Permanganates, inorganic, aqueous solution, n.o.s.
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: Aqueous solutions typically purple to dark violet in color, odorless to slight earthy odor. Liquid at room temperature with characteristic intense purple coloration from permanganate ion.
Water Reactivity: Already dissolved in water; strong oxidizer, reacts with organic materials and reducing agents
Extinguishing: Water spray, fog. DO NOT use foam or CO2 on bulk material. Use water to cool containers and dilute spills.
PPE: Level B minimum with SCBA; full face shield, chemical-resistant gloves and apron required due to strong oxidizing and staining properties
Isolation: ERG 140: Initial isolation 50m in all directions; if tank/rail car involved in fire, isolate 800m in 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/3214 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3214 Permanganates, inorganic, aqueous solution, n.o.s. Cls5 ERG140 | allfirefighter.com/hazmat/un/3214SMS / 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/3214
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Frequently Asked Questions about UN 3214
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 with SCBA; full face shield, chemical-resistant gloves and apron required due to strong oxidizing and staining properties
Water reactivity: Already dissolved in water; strong oxidizer, reacts with organic materials and reducing agents. Recommended extinguishing: Water spray, fog. DO NOT use foam or CO2 on bulk material. Use water to cool containers and dilute spills..
ERG Guide 140 recommendation: ERG 140: Initial isolation 50m in all directions; if tank/rail car involved in fire, isolate 800m in 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.