☣️ UN 3286 • CLASS 3
Flammable liquid, poisonous, corrosive, n.o.s.
Placard: Flammable. 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 3286
Class: 3
Placard type: Flammable
ERG: Guide 131 (check current ERG)
Isolation: ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind during spill, 800m downwind if fire involved
Chemical & Response Details
| Also known as | Flammable liquid, toxic, corrosive, n.o.s.Flammable liquid, poisonous, corrosive, not otherwise specifiedUN3286 |
| Appearance | Generic classification for flammable liquids that are also toxic and corrosive. Physical properties vary depending on specific chemical; typically a liquid at room temperature with characteristics determined by the actual substance shipped under this UN number. |
| Flash Point | Varies by specific substance; typically below 23C (73F) for Class 3 flammable liquids |
| Boiling Point | Varies by specific substance |
| Vapor Density | Varies by specific substance; typically heavier than air |
| Water Reactivity | Varies by specific substance; some may react with water due to corrosive properties |
| Extinguishing | Alcohol-resistant foam preferred for polar solvents; dry chemical, CO2; avoid water streams due to corrosive and toxic nature |
| PPE | ⚠️ Level A or B required; full-face SCBA mandatory; chemical-resistant suit due to corrosive and toxic nature; avoid all skin contact |
| Isolation | ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind during spill, 800m downwind if fire involved |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- TOXIC; may be fatal if inhaled, ingested or absorbed through skin.
- Inhalation or contact with some of these materials will irritate or burn skin and eyes.
- Methyl chloroacetate (UN2295) is an eye irritant/lachrymator (causes flow of tears).
- Fire will produce irritating, corrosive and/or toxic gases.
- Vapors may cause dizziness or asphyxiation, especially when in closed or confined areas.
- Runoff from fire control or dilution water may cause environmental contamination.
- HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
- Vapors may form explosive mixtures with air.
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.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 50 meters (150 feet) in all directions.
- 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 3286 — Flammable liquid, poisonous, corrosive, HAZMAT RADIO NOTE — UN 3286
Product: Flammable liquid, poisonous, corrosive, n.o.s.
Class 3 / Flammable / ERG 131
PPE: Level A or B required; full-face SCBA mandatory; chemical-resistant suit due to corrosive and toxic nature; avoid all skin contact
ISOLATION: ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind during spill, 800m downwind if fire involved
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 3286 — Flammable liquid, poisonous, corrosive, n.o.s.
Class: 3 | Placard: Flammable | ERG Guide: 131
Appearance: Generic classification for flammable liquids that are also toxic and corrosive. Physical properties vary depending on specific chemical; typically a liquid at room temperature with characteristics determined by the actual substance shipped under this UN number.
Water Reactivity: Varies by specific substance; some may react with water due to corrosive properties
Extinguishing: Alcohol-resistant foam preferred for polar solvents; dry chemical, CO2; avoid water streams due to corrosive and toxic nature
PPE: Level A or B required; full-face SCBA mandatory; chemical-resistant suit due to corrosive and toxic nature; avoid all skin contact
Isolation: ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind during spill, 800m downwind if fire involved
— Key Hazards —
• TOXIC; may be fatal if inhaled, ingested or absorbed through skin.
• Inhalation or contact with some of these materials will irritate or burn skin and eyes.
• Methyl chloroacetate (UN2295) is an eye irritant/lachrymator (causes flow of tears).
— 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.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/3286 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3286 Flammable liquid, poisonous, corrosive, n.o.s. Cls3 ERG131 | allfirefighter.com/hazmat/un/3286SMS / 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/3286
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FAQ
TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Inhalation or contact with some of these materials will irritate or burn skin and eyes. Methyl chloroacetate (UN2295) is an eye irritant/lachrymator (causes flow of tears). Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or asphyxiation, especially when in closed or confined areas. Runoff from fire control or dilution water may cause environmental contamination. HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air.
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 mandatory; chemical-resistant suit due to corrosive and toxic nature; avoid all skin contact
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 131 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.