☣️ UN 2759 • CLASS 6
UN 2759 — Arsenical pesticide, solid, poisonous
Placard: Toxic. ERG Guide 151. 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 2759 Quick Details
UN 2759
Product name: Arsenical pesticide, solid, poisonous
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: Initial isolation 25 meters in all directions; protective action distance up to 100 meters downwind for large spills; evacuate area if fire involves arsenical pesticides due to toxic fumes
Common Hazards of UN 2759
- 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 corrosive and/or toxic and cause environmental
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- Containers may explode when heated.
- Runoff may pollute waterways.
Chemical Identity & Physical Properties
| Also known as | Arsenical pesticide solidArsenic-based pesticideArsenic compound pesticideSolid arsenical |
| Appearance | Typically a white, gray, or colored crystalline or powdery solid, depending on formulation. May be odorless or have a slight garlic-like odor characteristic of some arsenic compounds. |
| Flash Point | Not applicable (non-flammable solid) |
| Boiling Point | Not applicable (varies by specific arsenical compound, typically decomposes before boiling) |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | No significant violent reaction with water, but may slowly dissolve and release toxic arsenic compounds into solution |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2759
Extinguishing Media
Dry chemical, sand, or earth for fire control; water spray may be used to keep containers cool but avoid runoff
PPE Requirements
⚠️ Level A or B required for spill response; full encapsulation if high concentrations; SCBA mandatory; chemical-resistant suit, gloves, and boots essential to prevent skin contact
Isolation & Evacuation
ERG 151: Initial isolation 25 meters in all directions; protective action distance up to 100 meters downwind for large spills; evacuate area if fire involves arsenical pesticides due to toxic fumes
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 2759 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.
- 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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📋 Copy & Share Field Card
UN 2759 — Arsenical pesticide, solid, poisonousHAZMAT RADIO NOTE — UN 2759
Product: Arsenical pesticide, solid, poisonous
Class 6 / Toxic / ERG 151
PPE: Level A or B required for spill response; full encapsulation if high concentrations; SCBA mandatory; chemical-resistant suit, gloves, and boots essential to prevent skin contact
ISOLATION: ERG 151: Initial isolation 25 meters in all directions; protective action distance up to 100 meters downwind for large spills; evacuate area if fire involves arsenical pesticides due to toxic fumes
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 2759 — Arsenical pesticide, solid, poisonous
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Typically a white, gray, or colored crystalline or powdery solid, depending on formulation. May be odorless or have a slight garlic-like odor characteristic of some arsenic compounds.
Water Reactivity: No significant violent reaction with water, but may slowly dissolve and release toxic arsenic compounds into solution
Extinguishing: Dry chemical, sand, or earth for fire control; water spray may be used to keep containers cool but avoid runoff
PPE: Level A or B required for spill response; full encapsulation if high concentrations; SCBA mandatory; chemical-resistant suit, gloves, and boots essential to prevent skin contact
Isolation: ERG 151: Initial isolation 25 meters in all directions; protective action distance up to 100 meters downwind for large spills; evacuate area if fire involves arsenical pesticides due to toxic fumes
— 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 call emergency response telephone number on shipping paper. If shipping paper
• 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/2759 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2759 Arsenical pesticide, solid, poisonous Cls6 ERG151 | allfirefighter.com/hazmat/un/2759SMS / 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/2759
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Frequently Asked Questions about UN 2759
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 corrosive and/or toxic and cause environmental Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive Containers may explode when heated. Runoff may pollute waterways.
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 for spill response; full encapsulation if high concentrations; SCBA mandatory; chemical-resistant suit, gloves, and boots essential to prevent skin contact
Water reactivity: No significant violent reaction with water, but may slowly dissolve and release toxic arsenic compounds into solution. Recommended extinguishing: Dry chemical, sand, or earth for fire control; water spray may be used to keep containers cool but avoid runoff.
ERG Guide 151 recommendation: ERG 151: Initial isolation 25 meters in all directions; protective action distance up to 100 meters downwind for large spills; evacuate area if fire involves arsenical pesticides due to toxic fumes
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 151 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.