☣️ UN 3288 • CLASS 6
UN 3288 — Poisonous solid, inorganic, n.o.s.
Placard: Toxic. ERG Guide 151. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ Verification required:
Broad or variable material category; verify exact product, SDS and shipping papers.
⚠️ 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.
Poisonous solid, inorganic, n.o.s. is a Class 6 toxic hazardous material assigned to ERG Guide 151. Because this is usually an n.o.s. entry, identify the exact product from shipping papers and SDS before close approach.
Hazard overview: Poisonous inorganic solid may be fatal if inhaled, ingested or absorbed through skin. Damaged containers, dusts, mists or vapors can contaminate responders and runoff may pollute waterways.
Response guidance: For a Poisonous inorganic solid incident, isolate the release area, keep personnel upwind and uphill, deny entry and avoid contact with spilled material. Use product-specific SDS details for containment, neutralization and decontamination.
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UN 3288 Quick Details
UN 3288
Product name: Poisonous solid, inorganic, n.o.s.
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial 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
Common Hazards of UN 3288
- 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 toxic, corrosive or environmentally harmful.
- The substance may decompose when heated and produce corrosive or toxic fumes.
- Containers may explode when heated.
- Runoff may pollute waterways.
Chemical Identity & Physical Properties
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.
| 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 |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3288
Extinguishing Media
Dry chemical, CO2, water spray; foam generally suitable for fire control
PPE Requirements
⚠️ Level A or B required; full-face SCBA, chemical-resistant suit with gloves and boots; avoid all skin contact due to high toxicity
Level A or B required; full-face SCBA, chemical-resistant suit with gloves and boots; avoid all skin contact due to high toxicity.
Isolation & Evacuation
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
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 3288 Incident
- CALL 911, then contact the emergency response telephone number shown on shipping papers, if available.
- 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 downwind protective distance based on conditions and incident command guidance.
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📋 Copy & Share Field Card
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 contact the emergency response telephone number shown on shipping papers, if available.
• 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/poisonous-solid-inorganic-n-un-3288 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN3288 Poisonous solid, inorganic, n.o.s. Cls6 ERG151 | allfirefighter.com/hazmat/un/poisonous-solid-inorganic-n-un-3288SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/poisonous-solid-inorganic-n-un-3288
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Frequently Asked Questions about UN 3288
UN 3288 is Poisonous solid, inorganic, n.o.s., assigned to ERG Guide 151 and placarded as Toxic.
Yes. Poisonous inorganic solid presents a serious toxic exposure hazard; avoid inhalation, ingestion, skin contact and contaminated runoff.
Yes, corrosive effects are possible. Avoid skin and eye contact and use chemical-resistant protection.
Use caution. Variable; some compounds may react with water producing toxic or corrosive solutions
Dry chemical, CO2, water spray; foam generally suitable for fire control.
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.