☣️ UN 2811 • CLASS 6
UN 2811 — Poisonous solid, organic, n.o.s.
Placard: Toxic. ERG Guide 154. 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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UN 2811 Quick Details
UN 2811
Product name: Poisonous solid, organic, n.o.s.
DOT Class: 6
Placard type: Toxic
ERG Guide: 154 (check current ERG)
Initial isolation: ERG 154: initial isolation 25m in all directions; protective action distance 50m downwind during spill, 300m+ if fire involved
Common Hazards of UN 2811
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
- Contact with molten substance may cause severe burns to skin and eyes.
- Avoid any skin contact.
- Fire may produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.).
- Corrosives in contact with metals may evolve flammable hydrogen gas.
Chemical Identity & Physical Properties
| Also known as | Toxic solid organic NOSPoisonous organic solidOrganic toxic substanceClass 6.1 organic solid |
| Appearance | Variable appearance depending on specific substance; typically a solid powder, crystals, or granules at room temperature. Color and odor vary widely as this is a generic n.o.s. classification covering multiple organic toxic compounds. |
| Flash Point | Not applicable (solid, variable depending on specific substance) |
| Boiling Point | Not applicable (varies by specific substance) |
| Vapor Density | Not applicable (solid, though some may sublime or release vapors) |
| Water Reactivity | Variable; some may react or dissolve releasing toxic vapors, others stable in water |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2811
Extinguishing Media
Dry chemical, CO2, or water spray if appropriate for specific substance; consult SDS for specific chemical
PPE Requirements
⚠️ Level B minimum recommended; SCBA required; full chemical-resistant suit; avoid all skin contact; use impervious gloves and boots
Isolation & Evacuation
ERG 154: initial isolation 25m in all directions; protective action distance 50m downwind during spill, 300m+ if fire involved
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 154).
First Actions for a UN 2811 Incident
- 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 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 the immediate precautionary measure distance, in the downwind
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UN 2811 — Poisonous solid, organic, n.o.s.HAZMAT RADIO NOTE — UN 2811
Product: Poisonous solid, organic, n.o.s.
Class 6 / Toxic / ERG 154
PPE: Level B minimum recommended; SCBA required; full chemical-resistant suit; avoid all skin contact; use impervious gloves and boots
ISOLATION: ERG 154: initial isolation 25m in all directions; protective action distance 50m downwind during spill, 300m+ 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 2811 — Poisonous solid, organic, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 154
Appearance: Variable appearance depending on specific substance; typically a solid powder, crystals, or granules at room temperature. Color and odor vary widely as this is a generic n.o.s. classification covering multiple organic toxic compounds.
Water Reactivity: Variable; some may react or dissolve releasing toxic vapors, others stable in water
Extinguishing: Dry chemical, CO2, or water spray if appropriate for specific substance; consult SDS for specific chemical
PPE: Level B minimum recommended; SCBA required; full chemical-resistant suit; avoid all skin contact; use impervious gloves and boots
Isolation: ERG 154: initial isolation 25m in all directions; protective action distance 50m downwind during spill, 300m+ if fire involved
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
• Contact with molten substance may cause severe burns to skin and eyes.
• Avoid any skin contact.
— 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/2811 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2811 Poisonous solid, organic, n.o.s. Cls6 ERG154 | allfirefighter.com/hazmat/un/2811SMS / 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/2811
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Frequently Asked Questions about UN 2811
TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Corrosives in contact with metals may evolve flammable hydrogen gas.
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 B minimum recommended; SCBA required; full chemical-resistant suit; avoid all skin contact; use impervious gloves and boots
Water reactivity: Variable; some may react or dissolve releasing toxic vapors, others stable in water. Recommended extinguishing: Dry chemical, CO2, or water spray if appropriate for specific substance; consult SDS for specific chemical.
ERG Guide 154 recommendation: ERG 154: initial isolation 25m in all directions; protective action distance 50m downwind during spill, 300m+ if fire involved
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 154 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.