☣️ 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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⚠️ 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 solid, organic, n.o.s. is a broad Class 6 entry for toxic organic solids. The exact substance controls toxicity, combustibility and water behavior.
Hazard overview: Responders should treat dust and contaminated surfaces as toxic until identified. Fire or heat can increase airborne hazards and produce toxic decomposition products.
Response guidance: Isolate the spill, avoid raising dust and keep runoff contained. Use extinguishing media only after checking the SDS or product identity when possible.
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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
- This n.o.s. entry covers many organic poisonous solids with product-specific behavior.
- Dust, powder or contaminated surfaces may be toxic by inhalation, ingestion or skin contact.
- Some solids may sublime or release toxic vapor when heated.
- Fire may produce toxic smoke and decomposition products.
- Runoff from firefighting or decontamination can carry toxic residues.
- Some products may be combustible even if not readily ignited.
- Exact PPE, decon and extinguishing media must be confirmed from the SDS.
Chemical Identity & Physical Properties
Appearance can range from powders and crystals to granules or solid pieces. Color, odor and vapor potential vary by the specific organic toxic compound.
| 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
Use SCBA and full chemical-resistant clothing for initial entry. Select gloves and decontamination methods based on the confirmed product.
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 and the emergency response number shown on the shipping papers or container documents.
- Keep unauthorized personnel away and establish an isolation perimeter before entry.
- Stay upwind, uphill and upstream; keep responders out of vapors, dusts and runoff.
- Avoid breathing vapors, dust, mist or smoke and avoid skin or eye contact.
- Do not touch damaged containers or spilled material unless properly trained and protected.
- Ventilate confined spaces only when personnel are trained, equipped and monitored.
- Use ERG guidance, SDS, shipping papers and air monitoring to confirm protective actions.
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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 —
• This n.o.s. entry covers many organic poisonous solids with product-specific behavior.
• Dust, powder or contaminated surfaces may be toxic by inhalation, ingestion or skin contact.
• Some solids may sublime or release toxic vapor when heated.
— First Actions —
• Call 911 and the emergency response number shown on the shipping papers or container documents.
• Keep unauthorized personnel away and establish an isolation perimeter before entry.
• Stay upwind, uphill and upstream; keep responders out of vapors, dusts and runoff.
• Avoid breathing vapors, dust, mist or smoke and avoid skin or eye contact.
SOURCE: allfirefighter.com/hazmat/un/poisonous-solid-organic-n-un-2811 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN2811 Poisonous solid, organic, n.o.s. Cls6 ERG154 | allfirefighter.com/hazmat/un/poisonous-solid-organic-n-un-2811SMS / 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-solid-organic-n-un-2811
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Frequently Asked Questions about UN 2811
It is an n.o.s. entry, so many different poisonous organic solids can ship under this number.
No. Some products may be combustible; the SDS must confirm fire behavior.
Avoid inhaling or spreading toxic dust and prevent contaminated runoff.
SCBA with chemical-resistant suit, gloves and boots is appropriate until the exact material is identified.
Only if compatible with the specific product; some materials may react, dissolve or spread contamination.
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.