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.
UN 3288 At a Glance
UN 3288 (Poisonous solid, inorganic) is listed as DOT Class 6 Toxic and is assigned to ERG Guide 151. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
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.
UN 3288 Quick Details
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 |
Fireground Response Guidance — UN 3288
Extinguishing Media
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.
Isolation & Evacuation
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.
📋 Copy & Share Field Card
UN 3288 — Poisonous solid, inorganic, n.o.s.Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.