☣️ UN 3467 • CLASS 6
Organometallic compound, solid, poisonous, n.o.s.
Placard: Toxic. 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 3467
Class: 6
Placard type: Toxic
ERG: Guide 151 (check current ERG)
Isolation: ERG 151: isolate spill 25-50m all directions; if fire or large spill, isolate 800m all directions and consider evacuation of 800m downwind
Chemical & Response Details
| Also known as | Organometallic solidToxic organometallic substanceMetal-organic compound solidOrganometallic poison |
| Appearance | Solid material varying in color and form depending on specific compound. May be crystalline, powder, or granular. Odor varies by compound. |
| Flash Point | Varies by specific compound; many are flammable or pyrophoric |
| Boiling Point | Not applicable (solid); decomposes at elevated temperatures |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Many organometallics react with water, releasing toxic or flammable gases; avoid water contact unless compound is known to be stable |
| Extinguishing | Dry chemical, sand, dry earth; avoid water-based agents unless compound compatibility is confirmed |
| PPE | ⚠️ Level B minimum with SCBA required; chemical-resistant suits for liquid contact; nitrile or butyl rubber gloves; prevent any skin contact |
| Isolation | ERG 151: isolate spill 25-50m all directions; if fire or large spill, isolate 800m all directions and consider evacuation of 800m downwind |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
- Avoid any skin contact.
- Fire may produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- Containers may explode when heated.
- Runoff may pollute waterways.
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.
- Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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UN 3467 — Organometallic compound, solid, poisonou HAZMAT RADIO NOTE — UN 3467
Product: Organometallic compound, solid, poisonous, n.o.s.
Class 6 / Toxic / ERG 151
PPE: Level B minimum with SCBA required; chemical-resistant suits for liquid contact; nitrile or butyl rubber gloves; prevent any skin contact
ISOLATION: ERG 151: isolate spill 25-50m all directions; if fire or large spill, isolate 800m all directions and consider evacuation of 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 3467 — Organometallic compound, solid, poisonous, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Solid material varying in color and form depending on specific compound. May be crystalline, powder, or granular. Odor varies by compound.
Water Reactivity: Many organometallics react with water, releasing toxic or flammable gases; avoid water contact unless compound is known to be stable
Extinguishing: Dry chemical, sand, dry earth; avoid water-based agents unless compound compatibility is confirmed
PPE: Level B minimum with SCBA required; chemical-resistant suits for liquid contact; nitrile or butyl rubber gloves; prevent any skin contact
Isolation: ERG 151: isolate spill 25-50m all directions; if fire or large spill, isolate 800m all directions and consider evacuation of 800m downwind
— Key Hazards —
• Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
• Avoid any skin contact.
• Fire may produce irritating, corrosive and/or toxic gases.
— 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.
• Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/3467 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3467 Organometallic compound, solid, poisonous, n.o.s. Cls6 ERG151 | allfirefighter.com/hazmat/un/3467SMS / 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/3467
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FAQ
Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. Avoid any skin contact. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive Containers may explode when heated. Runoff may pollute waterways.
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 suits for liquid contact; nitrile or butyl rubber gloves; prevent any skin contact
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 151 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.