☣️ UN 2780 • CLASS 3
Substituted nitrophenol pesticide, liquid, flammable, poisonous
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 2780
Class: 3
Placard type: Flammable
ERG: Guide 131 (check current ERG)
Isolation: ERG 131: Small spill isolate 50m; Large spill isolate 150m initial; Evacuate 800m downwind if tank/railcar involved in fire
Chemical & Response Details
| Also known as | nitrophenol pesticidedinitrophenol pesticideDNOC pesticidenitrated phenolic pesticide |
| Appearance | Flammable liquid varying in color from yellow to brown depending on specific compound. Typically has a phenolic or chemical odor. Liquid at room temperature. |
| Flash Point | 23-61C (73-142F) depending on formulation |
| Boiling Point | Varies by formulation, typically 100-200C (212-392F) |
| Vapor Density | Heavier than air (>1) |
| Water Reactivity | No significant reaction with water, but may contaminate water sources |
| Extinguishing | Alcohol-resistant foam (AR-AFFF), CO2, dry chemical; avoid straight water streams |
| PPE | ⚠️ Level A for spills or unknown concentrations; Level B minimum with SCBA; chemical-resistant suit, gloves, boots required; avoid all skin contact |
| Isolation | ERG 131: Small spill isolate 50m; Large spill isolate 150m initial; Evacuate 800m downwind if tank/railcar involved in fire |
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 2780 — Substituted nitrophenol pesticide, liqui HAZMAT RADIO NOTE — UN 2780
Product: Substituted nitrophenol pesticide, liquid, flammable, poisonous
Class 3 / Flammable / ERG 131
PPE: Level A for spills or unknown concentrations; Level B minimum with SCBA; chemical-resistant suit, gloves, boots required; avoid all skin contact
ISOLATION: ERG 131: Small spill isolate 50m; Large spill isolate 150m initial; Evacuate 800m downwind if tank/railcar involved in fire
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 2780 — Substituted nitrophenol pesticide, liquid, flammable, poisonous
Class: 3 | Placard: Flammable | ERG Guide: 131
Appearance: Flammable liquid varying in color from yellow to brown depending on specific compound. Typically has a phenolic or chemical odor. Liquid at room temperature.
Water Reactivity: No significant reaction with water, but may contaminate water sources
Extinguishing: Alcohol-resistant foam (AR-AFFF), CO2, dry chemical; avoid straight water streams
PPE: Level A for spills or unknown concentrations; Level B minimum with SCBA; chemical-resistant suit, gloves, boots required; avoid all skin contact
Isolation: ERG 131: Small spill isolate 50m; Large spill isolate 150m initial; Evacuate 800m downwind if tank/railcar involved in fire
— 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/2780 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2780 Substituted nitrophenol pesticide, liquid, flammable, poisonous Cls3 ERG131 | allfirefighter.com/hazmat/un/2780SMS / 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/2780
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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 for spills or unknown concentrations; Level B minimum with SCBA; chemical-resistant suit, gloves, boots required; 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.