☣️ UN 1484 • CLASS 5
UN 1484 — Potassium bromate
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 1484 Quick Details
UN 1484
Product name: Potassium bromate
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 140 (check current ERG)
Initial isolation: ERG 140: isolate spill area 25-50m; if fire or large spill, isolate 800m all directions, evacuate 800m downwind
Common Hazards of UN 1484
- 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 | Bromic acid potassium saltPotassium bromate(V)Bromate of potashKBrO3 |
| CAS Number | 7758-01-2 |
| Appearance | White crystalline powder or granular solid. Odorless. Stable under normal conditions but decomposes when heated. |
| Flash Point | Not applicable (non-flammable oxidizing solid) |
| Boiling Point | Not applicable (decomposes at approximately 370C/698F) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Dissolves in water without violent reaction, but solution is oxidizing |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1484
Extinguishing Media
Water spray to cool containers, dry chemical for small fires; foam not typically used for oxidizers
PPE Requirements
⚠️ Level B minimum for spills; full protective clothing and SCBA required for fire involvement
Isolation & Evacuation
ERG 140: isolate spill area 25-50m; if fire or large spill, isolate 800m all directions, evacuate 800m downwind
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 140).
First Actions for a UN 1484 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 1484 — Potassium bromateHAZMAT RADIO NOTE — UN 1484
Product: Potassium bromate
Class 5 / Oxidizer / ERG 140
PPE: Level B minimum for spills; full protective clothing and SCBA required for fire involvement
ISOLATION: ERG 140: isolate spill area 25-50m; if fire or large spill, isolate 800m all directions, evacuate 800m 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 1484 — Potassium bromate
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: White crystalline powder or granular solid. Odorless. Stable under normal conditions but decomposes when heated.
Water Reactivity: Dissolves in water without violent reaction, but solution is oxidizing
Extinguishing: Water spray to cool containers, dry chemical for small fires; foam not typically used for oxidizers
PPE: Level B minimum for spills; full protective clothing and SCBA required for fire involvement
Isolation: ERG 140: isolate spill area 25-50m; if fire or large spill, isolate 800m all directions, evacuate 800m 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 —
• 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/1484 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1484 Potassium bromate Cls5 ERG140 | ERG 140: isolate spill area 25-50m; if fire or large spill, isolate 800m all dir | allfirefighter.com/hazmat/un/1484SMS / 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/1484
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Frequently Asked Questions about UN 1484
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 for spills; full protective clothing and SCBA required for fire involvement
Water reactivity: Dissolves in water without violent reaction, but solution is oxidizing. Recommended extinguishing: Water spray to cool containers, dry chemical for small fires; foam not typically used for oxidizers.
ERG Guide 140 recommendation: ERG 140: isolate spill area 25-50m; if fire or large spill, isolate 800m all directions, evacuate 800m downwind
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.