☣️ UN 3259 • CLASS 8
UN 3259 — Polyamines, solid, corrosive, n.o.s.
Placard: Corrosive. ERG Guide 154. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ Verification required:
Broad or variable material category; verify exact product, SDS and shipping papers.
⚠️ 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.
UN 3259 Polyamines, solid, corrosive, n.o.s. is assigned to ERG Guide 154 for initial emergency response. 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. Verify the exact product from shipping papers and SDS before selecting tactics.
Hazard overview: Primary hazards: a corrosive hazardous material that can cause severe skin, eye and respiratory injury. 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.
Response guidance: For a UN 3259 incident, isolate the area, keep unauthorized personnel away, stay upwind/uphill and confirm the exact material from shipping papers and SDS. Use compatible extinguishing media and prevent contaminated runoff from entering waterways. Follow ERG Guide 154 and local incident command procedures.
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UN 3259 Quick Details
UN 3259
Product name: Polyamines, solid, corrosive, n.o.s.
DOT Class: 8
Placard type: Corrosive
ERG Guide: 154 (check current ERG)
Initial 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.
Common Hazards of UN 3259
- 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 contamination.
- 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.
Chemical Identity & Physical Properties
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.
| 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. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3259
Extinguishing Media
Alcohol-resistant foam recommended; CO2, dry chemical. Water may be ineffective but can be used for cooling.
PPE Requirements
⚠️ 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.
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 & Evacuation
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.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 154).
First Actions for a UN 3259 Incident
- CALL 911. Then call the emergency response telephone number on the shipping paper if available.
- 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 25 meters (75 feet) for solids.
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials, increase the initial isolation distance in the downwind direction as needed.
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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 the emergency response telephone number on the shipping paper if available.
• 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/polyamines-solid-corrosive-n-un-3259 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN3259 Polyamines, solid, corrosive, n.o.s. Cls8 ERG154 | allfirefighter.com/hazmat/un/polyamines-solid-corrosive-n-un-3259SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/polyamines-solid-corrosive-n-un-3259
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Frequently Asked Questions about UN 3259
UN 3259 is Polyamines, solid, corrosive, n.o.s., assigned to ERG Guide 154 for initial emergency response.
A corrosive hazardous material that can cause severe skin, eye and respiratory injury.
Polyamines, solid, corrosive, n.o.s. is not primarily classified as flammable, but fire or heat can create toxic, corrosive or pressure hazards.
Generally soluble in water; exothermic reaction possible. May form alkaline solutions. No violent reaction but generates heat.
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.
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.
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.