☣️ UN 3287 • CLASS 6
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.
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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 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.
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UN 3287 Quick Details
UN 3287
Product name: Poisonous liquid, inorganic, n.o.s.
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: Initial isolation 50m in all directions; Protective action distance: spill 100m day/200m night, fire 300m in all directions
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 |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3287
Extinguishing Media
Alcohol-resistant foam, dry chemical, CO2; avoid water spray unless necessary for cooling
PPE Requirements
⚠️ Level A or B required; full encapsulation if specific chemical unknown; SCBA mandatory; chemical-resistant suit, gloves, and boots essential
Level A or B required; full encapsulation if specific chemical unknown; SCBA mandatory; chemical-resistant suit, gloves, and boots essential.
Isolation & Evacuation
ERG 151: Initial isolation 50m in all directions; Protective action distance: spill 100m day/200m night, fire 300m in all directions
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
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.
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UN 3287 — Poisonous liquid, inorganic, n.o.s.HAZMAT RADIO NOTE — UN 3287
Product: Poisonous liquid, inorganic, n.o.s.
Class 6 / Toxic / ERG 151
PPE: Level A or B required; full encapsulation if specific chemical unknown; SCBA mandatory; chemical-resistant suit, gloves, and boots essential
ISOLATION: ERG 151: Initial isolation 50m in all directions; Protective action distance: spill 100m day/200m night, fire 300m in 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 3287 — Poisonous liquid, inorganic, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 151
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.
Water Reactivity: Variable; some may react with water producing toxic gases or heat
Extinguishing: Alcohol-resistant foam, dry chemical, CO2; avoid water spray unless necessary for cooling
PPE: Level A or B required; full encapsulation if specific chemical unknown; SCBA mandatory; chemical-resistant suit, gloves, and boots essential
Isolation: ERG 151: Initial isolation 50m in all directions; Protective action distance: spill 100m day/200m night, fire 300m in 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-liquid-inorganic-n-un-3287 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN3287 Poisonous liquid, inorganic, n.o.s. Cls6 ERG151 | allfirefighter.com/hazmat/un/poisonous-liquid-inorganic-n-un-3287SMS / 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-liquid-inorganic-n-un-3287
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Frequently Asked Questions about UN 3287
UN 3287 is Poisonous liquid, inorganic, n.o.s., assigned to ERG Guide 151 and placarded as Toxic.
Yes. Poisonous inorganic liquid 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 may react with water producing toxic gases or heat
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.