☣️ UN 3259 • CLASS 8
Polyamines, solid, corrosive, n.o.s.
Placard: Corrosive. 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 3259
Class: 8
Placard type: Corrosive
ERG: Guide 154 (check current ERG)
Isolation: ERG 154: Initial isolation 50m all directions. Protect persons downwind. Spill: isolate 50m; Fire: isolate 800m if tank/rail car involved. Evacuate immediate area for large spills.
Chemical & Response Details
| Also known as | PolyaminesAliphatic polyaminesPolymeric aminesDiethylenetriamine (example)Triethylenetetramine (example)Tetraethylenepentamine (example) |
| Appearance | Typically viscous liquids or waxy solids, colorless to amber in color. May have fishy or ammonia-like odor. Solid forms at room temperature as specified. |
| Flash Point | Varies by specific polyamine; typically 93-138°C (200-280°F) for common polyamines |
| Boiling Point | Varies by specific polyamine; typically 190-280°C (374-536°F) |
| Vapor Density | Greater than 1 (heavier than air) for most polyamines |
| Water Reactivity | Generally soluble in water; exothermic reaction possible. May form alkaline solutions. No violent reaction but generates heat. |
| Extinguishing | Alcohol-resistant foam recommended; CO2, dry chemical. Water may be ineffective but can be used for cooling. |
| PPE | ⚠️ Level B minimum for solids; full chemical protective clothing and SCBA required. Butyl rubber or nitrile gloves. Face shield and eye protection mandatory. Severe corrosive hazard. |
| Isolation | ERG 154: Initial isolation 50m all directions. Protect persons downwind. Spill: isolate 50m; Fire: isolate 800m if tank/rail car involved. Evacuate immediate area for large spills. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
- Contact with molten substance may cause severe burns to skin and eyes.
- 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
- Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.).
- Corrosives in contact with metals may evolve flammable hydrogen gas.
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 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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UN 3259 — Polyamines, solid, corrosive, n.o.s. HAZMAT RADIO NOTE — UN 3259
Product: Polyamines, solid, corrosive, n.o.s.
Class 8 / Corrosive / ERG 154
PPE: Level B minimum for solids; full chemical protective clothing and SCBA required. Butyl rubber or nitrile gloves. Face shield and eye protection mandatory. Severe corrosive hazard.
ISOLATION: ERG 154: Initial isolation 50m all directions. Protect persons downwind. Spill: isolate 50m; Fire: isolate 800m if tank/rail car involved. Evacuate immediate area for large spills.
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 3259 — Polyamines, solid, corrosive, n.o.s.
Class: 8 | Placard: Corrosive | ERG Guide: 154
Appearance: Typically viscous liquids or waxy solids, colorless to amber in color. May have fishy or ammonia-like odor. Solid forms at room temperature as specified.
Water Reactivity: Generally soluble in water; exothermic reaction possible. May form alkaline solutions. No violent reaction but generates heat.
Extinguishing: Alcohol-resistant foam recommended; CO2, dry chemical. Water may be ineffective but can be used for cooling.
PPE: Level B minimum for solids; full chemical protective clothing and SCBA required. Butyl rubber or nitrile gloves. Face shield and eye protection mandatory. Severe corrosive hazard.
Isolation: ERG 154: Initial isolation 50m all directions. Protect persons downwind. Spill: isolate 50m; Fire: isolate 800m if tank/rail car involved. Evacuate immediate area for large spills.
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
• Contact with molten substance may cause severe burns to skin and eyes.
• Avoid any skin contact.
— 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/3259 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3259 Polyamines, solid, corrosive, n.o.s. Cls8 ERG154 | allfirefighter.com/hazmat/un/3259SMS / 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/3259
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FAQ
TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury Contact with molten substance may cause severe burns to skin and eyes. 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 Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Corrosives in contact with metals may evolve flammable hydrogen gas.
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 for solids; full chemical protective clothing and SCBA required. Butyl rubber or nitrile gloves. Face shield and eye protection mandatory. Severe corrosive hazard.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 154 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.