☣️ UN 2734 • CLASS 8
UN 2734 — Polyamines, liquid, corrosive, flammable, n.o.s.
Placard: Corrosive. ERG Guide 132. 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 2734 Quick Details
UN 2734
Product name: Polyamines, liquid, corrosive, flammable, n.o.s.
DOT Class: 8
Placard type: Corrosive
ERG Guide: 132 (check current ERG)
Initial isolation: ERG 132: Small spill isolate 30m all directions; large spill isolate 100m, downwind 300m; if tank/rail car involved in fire isolate 800m all directions
Common Hazards of UN 2734
- Flammable/combustible material.
- May be ignited by heat, sparks or flames.
- Vapors may form explosive mixtures with air.
- Vapors may travel to source of ignition and flash back.
- Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas
- Vapor explosion hazard indoors, outdoors or in sewers.
- Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
- Runoff to sewer may create fire or explosion hazard.
Chemical Identity & Physical Properties
| Also known as | Aliphatic polyamines liquidOrganic polyaminesMulti-amine compoundsPolyalkylene polyamines |
| Appearance | Viscous, oily liquid ranging from colorless to amber; strong ammonia-like or fishy odor; corrosive to skin and metals. |
| Flash Point | Typically 60-93C (140-200F), varies by specific polyamine composition |
| Boiling Point | 150-300C (302-572F), varies by molecular weight and composition |
| Vapor Density | 3-5 (heavier than air) |
| Water Reactivity | Soluble in water producing heat; alkaline solutions formed are corrosive |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2734
Extinguishing Media
Alcohol-resistant foam, CO2, dry chemical; regular foam may not be effective
PPE Requirements
⚠️ Level B minimum with chemical-resistant suit; SCBA required; butyl rubber or neoprene gloves; face shield and splash protection mandatory
Isolation & Evacuation
ERG 132: Small spill isolate 30m all directions; large spill isolate 100m, downwind 300m; if tank/rail car involved in fire isolate 800m all directions
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 132).
First Actions for a UN 2734 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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UN 2734 — Polyamines, liquid, corrosive, flammableHAZMAT RADIO NOTE — UN 2734
Product: Polyamines, liquid, corrosive, flammable, n.o.s.
Class 8 / Corrosive / ERG 132
PPE: Level B minimum with chemical-resistant suit; SCBA required; butyl rubber or neoprene gloves; face shield and splash protection mandatory
ISOLATION: ERG 132: Small spill isolate 30m all directions; large spill isolate 100m, downwind 300m; if tank/rail car involved in fire isolate 800m all directions
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 2734 — Polyamines, liquid, corrosive, flammable, n.o.s.
Class: 8 | Placard: Corrosive | ERG Guide: 132
Appearance: Viscous, oily liquid ranging from colorless to amber; strong ammonia-like or fishy odor; corrosive to skin and metals.
Water Reactivity: Soluble in water producing heat; alkaline solutions formed are corrosive
Extinguishing: Alcohol-resistant foam, CO2, dry chemical; regular foam may not be effective
PPE: Level B minimum with chemical-resistant suit; SCBA required; butyl rubber or neoprene gloves; face shield and splash protection mandatory
Isolation: ERG 132: Small spill isolate 30m all directions; large spill isolate 100m, downwind 300m; if tank/rail car involved in fire isolate 800m all directions
— Key Hazards —
• Flammable/combustible material.
• May be ignited by heat, sparks or flames.
• Vapors may form explosive mixtures with air.
— 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/2734 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2734 Polyamines, liquid, corrosive, flammable, n.o.s. Cls8 ERG132 | allfirefighter.com/hazmat/un/2734SMS / 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/2734
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Frequently Asked Questions about UN 2734
Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard.
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 with chemical-resistant suit; SCBA required; butyl rubber or neoprene gloves; face shield and splash protection mandatory
Water reactivity: Soluble in water producing heat; alkaline solutions formed are corrosive. Recommended extinguishing: Alcohol-resistant foam, CO2, dry chemical; regular foam may not be effective.
ERG Guide 132 recommendation: ERG 132: Small spill isolate 30m all directions; large spill isolate 100m, downwind 300m; if tank/rail car involved in fire isolate 800m all directions
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 132 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.