☣️ UN 1479 • CLASS 5
Oxidizing solid, n.o.s.
Placard: Oxidizer. 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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Quick details
UN 1479
Class: 5
Placard type: Oxidizer
ERG: Guide 140 (check current ERG)
Isolation: ERG 140: isolate spill area at least 25-50m; if fire or large spill, isolate 800m all directions and consider evacuation
Chemical & Response Details
| Also known as | Oxidizing agent n.o.s.Oxidizer solid n.o.s.Oxidising solid not otherwise specifiedClass 5.1 oxidizer n.o.s. |
| Appearance | Varies widely as this is a not otherwise specified (n.o.s.) classification covering various solid oxidizing substances. Typically appears as crystalline powder, granules, or solid materials that may be white, colored, or odorless depending on the specific oxidizer. |
| Flash Point | Not applicable (oxidizing solid, not flammable itself) |
| Boiling Point | Not applicable (decomposes or varies by specific substance) |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | Varies by specific oxidizer; some react with water generating heat or oxygen, others stable; avoid contamination |
| Extinguishing | Use water spray to cool containers; avoid combustible materials; dry chemical or CO2 for small fires |
| PPE | ⚠️ Level B minimum recommended; SCBA and full protective clothing required; avoid contact with skin and eyes; oxidizers can intensify fires |
| Isolation | ERG 140: isolate spill area at least 25-50m; if fire or large spill, isolate 800m all directions and consider evacuation |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- 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
First actions (field-minded)
- 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 1479 — Oxidizing solid, n.o.s. HAZMAT RADIO NOTE — UN 1479
Product: Oxidizing solid, n.o.s.
Class 5 / Oxidizer / ERG 140
PPE: Level B minimum recommended; SCBA and full protective clothing required; avoid contact with skin and eyes; oxidizers can intensify fires
ISOLATION: ERG 140: isolate spill area at least 25-50m; if fire or large spill, isolate 800m 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 1479 — Oxidizing solid, n.o.s.
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: Varies widely as this is a not otherwise specified (n.o.s.) classification covering various solid oxidizing substances. Typically appears as crystalline powder, granules, or solid materials that may be white, colored, or odorless depending on the specific oxidizer.
Water Reactivity: Varies by specific oxidizer; some react with water generating heat or oxygen, others stable; avoid contamination
Extinguishing: Use water spray to cool containers; avoid combustible materials; dry chemical or CO2 for small fires
PPE: Level B minimum recommended; SCBA and full protective clothing required; avoid contact with skin and eyes; oxidizers can intensify fires
Isolation: ERG 140: isolate spill area at least 25-50m; if fire or large spill, isolate 800m 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/1479 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1479 Oxidizing solid, n.o.s. Cls5 ERG140 | allfirefighter.com/hazmat/un/1479SMS / 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/1479
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FAQ
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 recommended; SCBA and full protective clothing required; avoid contact with skin and eyes; oxidizers can intensify fires
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.