UN 2469 — Zinc bromate
Placard: Oxidizer. ERG Guide 140. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2469 is Zinc bromate, an oxidizing bromate salt assigned to ERG Guide 140. Heat or contamination can cause violent decomposition.
Hazard overview: OXIDIZER; can accelerate burning and make combustible materials ignite more easily. May decompose violently if heated, shocked, contaminated or involved in fire. Contact with fuels, organics, sulfur, powders or reducing agents can create fire or explosion hazards.
Response guidance: For UN 2469, isolate the area, remove combustibles and prevent fuel/organic contamination. Cool containers from protection, use oxidizer-compatible tactics and contain toxic or oxidizing runoff under ERG 140.
Firefighter training notes: Training for UN 2469 should emphasize oxidizer contamination control, incompatible fuels/organics, decomposition signs, container cooling, toxic runoff and decontamination. Use ERG 140, SDS and local SOP.
Regulatory context: Zinc bromate is regulated as a hazardous material for transport and emergency response. Storage, exposure, spill reporting, waste and fire-code duties depend on quantity, concentration and jurisdiction; verify shipping papers, SDS and local authority requirements.
Storage & handling: Zinc bromate should be stored in compatible oxidizer-rated containers away from fuels, oils, organics, reducing agents, acids where incompatible and combustible contamination.
UN 2469 Quick Details
Common Hazards of UN 2469
- OXIDIZER; can accelerate burning and make combustible materials ignite more easily.
- May decompose violently if heated, shocked, contaminated or involved in fire.
- Contact with fuels, organics, sulfur, powders or reducing agents can create fire or explosion hazards.
- Dust or solution can irritate eyes, skin and respiratory tract.
- Fire may produce bromine/bromide fumes and other irritating/toxic gases.
- Runoff may carry oxidizer and metal salt contamination.
- Containers may rupture or explode when heated.
Chemical Identity & Physical Properties
White to pale yellow crystalline solid, typically odorless. Hygroscopic material that absorbs moisture from air.
| Also known as | Zinc bromate hexahydrateBromic acid zinc saltZinc dibromate |
| CAS Number | 14519-07-4 |
| Appearance | White to pale yellow crystalline solid, typically odorless. Hygroscopic material that absorbs moisture from air. |
| Flash Point | Not applicable (oxidizer solid) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Soluble in water; releases heat when dissolved but no violent reaction under normal conditions |
Fireground Response Guidance — UN 2469
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for dust, vapor, mist, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 2469 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Avoid breathing vapor, dust, gas, mist, smoke or fumes and avoid skin or eye contact.
- Keep fuels, oils, organics, reducing agents and combustible contamination away from the oxidizer.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 140, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 2469 — Zinc bromateUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.