☣️ UN 1482 • CLASS 5
UN 1482 — Permanganates, inorganic, 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.
Permanganates, inorganic, n.o.s. are a class of substances that can accelerate burning and potentially decompose explosively when heated or involved in a fire. They are typically purple to dark purple crystalline solids or granules.
Hazard overview: These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire.
Response guidance: If a fire occurs, use dry chemical, CO2, or sand to extinguish. Do not use water spray directly on solid material.
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UN 1482 Quick Details
UN 1482
Product name: Permanganates, inorganic, n.o.s.
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 140 (check current ERG)
Initial isolation: ERG 140: Isolate spill area 25-50m in all directions. If fire or large spill, isolate 800m and evacuate downwind.
Common Hazards of UN 1482
- 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
Typically purple to dark purple crystalline solids or granules. Odorless. Solid at room temperature.
| Also known as | Potassium permanganateSodium permanganatePermanganate saltsManganese oxide salts |
| Appearance | Typically purple to dark purple crystalline solids or granules. Odorless. Solid at room temperature. |
| Flash Point | Not applicable (non-flammable solid oxidizer) |
| Boiling Point | Decomposes before boiling at approximately 240C (464F) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Soluble in water, forming purple solution. No violent reaction but may cause heating. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1482
Extinguishing Media
Dry chemical, CO2, sand. Do not use water spray directly on solid material.
PPE Requirements
⚠️ Level C minimum with full face respirator. Chemical resistant gloves and clothing. SCBA if decomposition or fire conditions.
Level C minimum with full face respirator. Chemical resistant gloves and clothing. SCBA if decomposition or fire conditions.
Isolation & Evacuation
ERG 140: Isolate spill area 25-50m in all directions. If fire or large spill, isolate 800m and evacuate downwind.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 140).
First Actions for a UN 1482 Incident
- 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 1482 — Permanganates, inorganic, n.o.s.HAZMAT RADIO NOTE — UN 1482
Product: Permanganates, inorganic, n.o.s.
Class 5 / Oxidizer / ERG 140
PPE: Level C minimum with full face respirator. Chemical resistant gloves and clothing. SCBA if decomposition or fire conditions.
ISOLATION: ERG 140: Isolate spill area 25-50m in all directions. If fire or large spill, isolate 800m and evacuate downwind.
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 1482 — Permanganates, inorganic, n.o.s.
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: Typically purple to dark purple crystalline solids or granules. Odorless. Solid at room temperature.
Water Reactivity: Soluble in water, forming purple solution. No violent reaction but may cause heating.
Extinguishing: Dry chemical, CO2, sand. Do not use water spray directly on solid material.
PPE: Level C minimum with full face respirator. Chemical resistant gloves and clothing. SCBA if decomposition or fire conditions.
Isolation: ERG 140: Isolate spill area 25-50m in all directions. If fire or large spill, isolate 800m and evacuate downwind.
— 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 —
• 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
SOURCE: allfirefighter.com/hazmat/un/permanganates-inorganic-n-o-un-1482 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN1482 Permanganates, inorganic, n.o.s. Cls5 ERG140 | allfirefighter.com/hazmat/un/permanganates-inorganic-n-o-un-1482SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/permanganates-inorganic-n-o-un-1482
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Frequently Asked Questions about UN 1482
No, but it will accelerate burning when involved in a fire.
Yes, when heated or involved in a fire.
Level C minimum with full face respirator, chemical resistant gloves and clothing, and SCBA if decomposition or fire conditions.
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.