☣️ UN 3087 • CLASS 5
Oxidizing solid, poisonous, 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 3087
Class: 5
Placard type: Oxidizer
ERG: Guide 141 (check current ERG)
Isolation: ERG 141: Initial isolation 50m in all directions; protect persons downwind; if tank/rail car involved in fire, isolate 800m in all directions
Chemical & Response Details
| Also known as | Oxidizing solid toxic n.o.s.Oxidising solid poisonous n.o.s.Class 5.1 toxic oxidizerUN3087 |
| Appearance | Generic classification covering various oxidizing solids that are also poisonous. Physical form is typically crystalline or powdered solid at room temperature. Color and odor vary depending on specific substance. |
| Flash Point | Not applicable (oxidizing solid) |
| Boiling Point | Not applicable (decomposes or varies by specific substance) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Variable - some may react with water releasing toxic gases or heat; avoid water contact unless specific substance is known to be stable |
| Extinguishing | Dry chemical, sand, or earth only - do not use water or foam without specialized knowledge of the specific oxidizer |
| PPE | ⚠️ Level B minimum with full face SCBA required; chemical-resistant suit; consider Level A if substance identity unknown or vapor/dust hazard present |
| Isolation | ERG 141: Initial isolation 50m in all directions; protect persons downwind; if tank/rail car involved in fire, isolate 800m in all directions |
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.
- May explode from heat or contamination.
- Some may burn rapidly.
- 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.
- Toxic by ingestion.
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 3087 — Oxidizing solid, poisonous, n.o.s. HAZMAT RADIO NOTE — UN 3087
Product: Oxidizing solid, poisonous, n.o.s.
Class 5 / Oxidizer / ERG 141
PPE: Level B minimum with full face SCBA required; chemical-resistant suit; consider Level A if substance identity unknown or vapor/dust hazard present
ISOLATION: ERG 141: Initial isolation 50m in all directions; protect persons downwind; if tank/rail car involved in fire, isolate 800m 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 3087 — Oxidizing solid, poisonous, n.o.s.
Class: 5 | Placard: Oxidizer | ERG Guide: 141
Appearance: Generic classification covering various oxidizing solids that are also poisonous. Physical form is typically crystalline or powdered solid at room temperature. Color and odor vary depending on specific substance.
Water Reactivity: Variable - some may react with water releasing toxic gases or heat; avoid water contact unless specific substance is known to be stable
Extinguishing: Dry chemical, sand, or earth only - do not use water or foam without specialized knowledge of the specific oxidizer
PPE: Level B minimum with full face SCBA required; chemical-resistant suit; consider Level A if substance identity unknown or vapor/dust hazard present
Isolation: ERG 141: Initial isolation 50m in all directions; protect persons downwind; if tank/rail car involved in fire, isolate 800m in all directions
— Key Hazards —
• These substances will accelerate burning when involved in a fire.
• May explode from heat or contamination.
• Some may burn rapidly.
— 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/3087 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3087 Oxidizing solid, poisonous, n.o.s. Cls5 ERG141 | allfirefighter.com/hazmat/un/3087SMS / 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/3087
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FAQ
These substances will accelerate burning when involved in a fire. May explode from heat or contamination. Some may burn rapidly. 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. Toxic by ingestion.
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 full face SCBA required; chemical-resistant suit; consider Level A if substance identity unknown or vapor/dust hazard present
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 141 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.