☣️ UN 3288 • CLASS 6
Poisonous solid, inorganic, 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 3288
Class: 6
Placard type: Toxic
ERG: Guide 151 (check current ERG)
Isolation: ERG 151: Isolate spill 25m all directions; for large spills isolate 50m and evacuate 100m downwind; if fire or tank involved, isolate 800m all directions
Chemical & Response Details
| Also known as | Toxic solid, inorganic, n.o.s.Inorganic poison solidPoisonous inorganic solid NOSToxic inorganic substance, solid |
| Appearance | Various solid forms depending on specific substance; may be crystalline powder, granules, or solid mass. Color, odor, and appearance vary widely as this is a generic classification for multiple inorganic toxic compounds. |
| Flash Point | Not applicable (non-flammable solid) |
| Boiling Point | Variable depending on specific compound |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Variable; some compounds may react with water producing toxic or corrosive solutions |
| Extinguishing | Dry chemical, CO2, water spray; foam generally suitable for fire control |
| PPE | ⚠️ Level A or B required; full-face SCBA, chemical-resistant suit with gloves and boots; avoid all skin contact due to high toxicity |
| Isolation | ERG 151: Isolate spill 25m all directions; for large spills isolate 50m and evacuate 100m downwind; if fire or tank involved, isolate 800m all directions |
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 3288 — Poisonous solid, inorganic, n.o.s. HAZMAT RADIO NOTE — UN 3288
Product: Poisonous solid, inorganic, n.o.s.
Class 6 / Toxic / ERG 151
PPE: Level A or B required; full-face SCBA, chemical-resistant suit with gloves and boots; avoid all skin contact due to high toxicity
ISOLATION: ERG 151: Isolate spill 25m all directions; for large spills isolate 50m and evacuate 100m downwind; if fire or tank involved, isolate 800m 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 3288 — Poisonous solid, inorganic, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Various solid forms depending on specific substance; may be crystalline powder, granules, or solid mass. Color, odor, and appearance vary widely as this is a generic classification for multiple inorganic toxic compounds.
Water Reactivity: Variable; some compounds may react with water producing toxic or corrosive solutions
Extinguishing: Dry chemical, CO2, water spray; foam generally suitable for fire control
PPE: Level A or B required; full-face SCBA, chemical-resistant suit with gloves and boots; avoid all skin contact due to high toxicity
Isolation: ERG 151: Isolate spill 25m all directions; for large spills isolate 50m and evacuate 100m downwind; if fire or tank involved, isolate 800m all directions
— 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/3288 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3288 Poisonous solid, inorganic, n.o.s. Cls6 ERG151 | allfirefighter.com/hazmat/un/3288SMS / 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/3288
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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 A or B required; full-face SCBA, chemical-resistant suit with gloves and boots; avoid all skin contact due to high toxicity
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.