☣️ UN 2787 • CLASS 3
UN 2787 — Organotin pesticide, liquid, flammable, poisonous
Placard: Flammable. ERG Guide 131. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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 2787 Quick Details
UN 2787
Product name: Organotin pesticide, liquid, flammable, poisonous
DOT Class: 3
Placard type: Flammable
ERG Guide: 131 (check current ERG)
Initial isolation: ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind for small spills, 800m for large spills in daytime
Common Hazards of UN 2787
- 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.
Chemical Identity & Physical Properties
| Also known as | Organotin compound pesticideTin-organic pesticide solutionOrganostannic pesticide liquidFlammable organotin formulation |
| Appearance | Liquid pesticide formulation containing organotin compounds, typically amber to dark brown in color with a characteristic chemical odor. Flammable liquid at room temperature. |
| Flash Point | Varies by formulation, typically below 23°C (73°F) as a Class 3 flammable liquid |
| Boiling Point | Varies by specific formulation and solvent system, typically 60-150°C (140-302°F) |
| Vapor Density | Heavier than air (typically >1), vapors will accumulate in low areas |
| Water Reactivity | No violent reaction with water, but may hydrolyze slowly; immiscible and will form separate layer |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2787
Extinguishing Media
Alcohol-resistant foam, dry chemical, CO2; water spray for cooling only
PPE Requirements
⚠️ Level A or B required; SCBA mandatory; full chemical-resistant suit; avoid all skin contact due to severe dermal toxicity
Isolation & Evacuation
ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind for small spills, 800m for large spills in daytime
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 131).
First Actions for a UN 2787 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 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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📋 Copy & Share Field Card
UN 2787 — Organotin pesticide, liquid, flammable,HAZMAT RADIO NOTE — UN 2787
Product: Organotin pesticide, liquid, flammable, poisonous
Class 3 / Flammable / ERG 131
PPE: Level A or B required; SCBA mandatory; full chemical-resistant suit; avoid all skin contact due to severe dermal toxicity
ISOLATION: ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind for small spills, 800m for large spills in daytime
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 2787 — Organotin pesticide, liquid, flammable, poisonous
Class: 3 | Placard: Flammable | ERG Guide: 131
Appearance: Liquid pesticide formulation containing organotin compounds, typically amber to dark brown in color with a characteristic chemical odor. Flammable liquid at room temperature.
Water Reactivity: No violent reaction with water, but may hydrolyze slowly; immiscible and will form separate layer
Extinguishing: Alcohol-resistant foam, dry chemical, CO2; water spray for cooling only
PPE: Level A or B required; SCBA mandatory; full chemical-resistant suit; avoid all skin contact due to severe dermal toxicity
Isolation: ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind for small spills, 800m for large spills in daytime
— 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/2787 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2787 Organotin pesticide, liquid, flammable, poisonous Cls3 ERG131 | allfirefighter.com/hazmat/un/2787SMS / 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/2787
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Frequently Asked Questions about UN 2787
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; SCBA mandatory; full chemical-resistant suit; avoid all skin contact due to severe dermal toxicity
Water reactivity: No violent reaction with water, but may hydrolyze slowly; immiscible and will form separate layer. Recommended extinguishing: Alcohol-resistant foam, dry chemical, CO2; water spray for cooling only.
ERG Guide 131 recommendation: ERG 131: Initial isolation 50m in all directions; protective action distance 300m downwind for small spills, 800m for large spills in daytime
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.