UN 3287 — Poisonous liquid, inorganic, n.o.s.
Placard: Toxic. ERG Guide 151. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3287 At a Glance
UN 3287 (Poisonous liquid, 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 liquid, 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 liquid 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 liquid 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 3287 Quick Details
Common Hazards of UN 3287
- 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
Variable appearance depending on specific chemical; may be clear, colored, or opaque liquid. N.O.S. designation covers various inorganic toxic liquids not otherwise specified.
| Also known as | Toxic liquid, inorganic, n.o.s.Inorganic poison solutionPoisonous inorganic liquid NOSToxic inorganic substance, liquid |
| Appearance | Variable appearance depending on specific chemical; may be clear, colored, or opaque liquid. N.O.S. designation covers various inorganic toxic liquids not otherwise specified. |
| Flash Point | Not applicable (not classified as flammable) |
| Boiling Point | Variable depending on specific substance |
| Vapor Density | Variable depending on specific substance; many inorganic solutions heavier than air |
| Water Reactivity | Variable; some may react with water producing toxic gases or heat |
Fireground Response Guidance — UN 3287
Extinguishing Media
PPE Requirements
Level A or B required; full encapsulation if specific chemical unknown; SCBA mandatory; chemical-resistant suit, gloves, and boots essential.
Isolation & Evacuation
First Actions for a UN 3287 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 3287 — Poisonous liquid, 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.