☣️ UN 1503 • CLASS 5
UN 1503 — Sodium permanganate
Placard: Oxidizer. ERG Guide 140. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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 1503 Quick Details
UN 1503
Product name: Sodium permanganate
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 140 (check current ERG)
Initial isolation: ERG 140: Isolate spill or leak area immediately for at least 50 meters in all directions. For large spills, consider initial evacuation for 100 meters in all directions. If tank/rail car is involved in fire, isolate 800 meters in all directions.
Common Hazards of UN 1503
- 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 | Permanganate of sodaSodium manganate(VII)Permanganic acid sodium salt |
| CAS Number | 10101-50-5 |
| Appearance | Purple to reddish-purple crystalline solid. Odorless. Hygroscopic and gradually decomposes in moist air. |
| Flash Point | Not applicable (oxidizer) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Dissolves readily in water, releasing heat. Solution is strongly oxidizing but not violently reactive with water itself. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1503
Extinguishing Media
Dry chemical, sand, or dry earth. Do not use water jets directly on solid material. Flooding amounts of water may be used from a distance.
PPE Requirements
⚠️ Level B minimum with SCBA required. Chemical-resistant suit and gloves. Avoid all contact with skin and eyes.
Isolation & Evacuation
ERG 140: Isolate spill or leak area immediately for at least 50 meters in all directions. For large spills, consider initial evacuation for 100 meters in all directions. If tank/rail car is involved in fire, isolate 800 meters in all directions.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 140).
First Actions for a UN 1503 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 1503 — Sodium permanganateHAZMAT RADIO NOTE — UN 1503
Product: Sodium permanganate
Class 5 / Oxidizer / ERG 140
PPE: Level B minimum with SCBA required. Chemical-resistant suit and gloves. Avoid all contact with skin and eyes.
ISOLATION: ERG 140: Isolate spill or leak area immediately for at least 50 meters in all directions. For large spills, consider initial evacuation for 100 meters in all directions. If tank/rail car is involved in fire, isolate 800 meters 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 1503 — Sodium permanganate
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: Purple to reddish-purple crystalline solid. Odorless. Hygroscopic and gradually decomposes in moist air.
Water Reactivity: Dissolves readily in water, releasing heat. Solution is strongly oxidizing but not violently reactive with water itself.
Extinguishing: Dry chemical, sand, or dry earth. Do not use water jets directly on solid material. Flooding amounts of water may be used from a distance.
PPE: Level B minimum with SCBA required. Chemical-resistant suit and gloves. Avoid all contact with skin and eyes.
Isolation: ERG 140: Isolate spill or leak area immediately for at least 50 meters in all directions. For large spills, consider initial evacuation for 100 meters in all directions. If tank/rail car is involved in fire, isolate 800 meters 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/1503 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1503 Sodium permanganate Cls5 ERG140 | ERG 140: Isolate spill or leak area immediately for at least 50 meters in all di | allfirefighter.com/hazmat/un/1503SMS / 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/1503
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Frequently Asked Questions about UN 1503
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 required. Chemical-resistant suit and gloves. Avoid all contact with skin and eyes.
Water reactivity: Dissolves readily in water, releasing heat. Solution is strongly oxidizing but not violently reactive with water itself.. Recommended extinguishing: Dry chemical, sand, or dry earth. Do not use water jets directly on solid material. Flooding amounts of water may be used from a distance..
ERG Guide 140 recommendation: ERG 140: Isolate spill or leak area immediately for at least 50 meters in all directions. For large spills, consider initial evacuation for 100 meters in all directions. If tank/rail car is involved in fire, isolate 800 meters in all directions.
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.