☣️ UN 2079 • CLASS 8
UN 2079 — Diethylenetriamine
Placard: Corrosive. ERG Guide 154. 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 2079 Quick Details
UN 2079
Product name: Diethylenetriamine
DOT Class: 8
Placard type: Corrosive
ERG Guide: 154 (check current ERG)
Initial isolation: ERG 154: isolate spill 25-50m; for large spills consider 300m initial downwind evacuation; if tank/railcar involved in fire, isolate 800m all directions
Common Hazards of UN 2079
- 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.
Chemical Identity & Physical Properties
| Also known as | DETA2,2'-Diaminodiethylamine3-Azapentane-1,5-diamineAminoethylethanediamineBis(2-aminoethyl)amine |
| CAS Number | 111-40-0 |
| Appearance | Clear to yellow viscous liquid with an ammonia-like odor. Corrosive and hygroscopic at room temperature. |
| Flash Point | 98C (208F) |
| Boiling Point | 207C (405F) |
| Vapor Density | 3.6 (heavier than air) |
| Water Reactivity | Soluble in water; exothermic reaction generates heat but not violent |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2079
Extinguishing Media
Alcohol-resistant foam, CO2, dry chemical; avoid direct water streams on spills
PPE Requirements
⚠️ Level B minimum; SCBA required; full chemical-resistant suit, neoprene or butyl rubber gloves; severe skin and eye contact hazard
Isolation & Evacuation
ERG 154: isolate spill 25-50m; for large spills consider 300m initial downwind evacuation; if tank/railcar involved in fire, isolate 800m all directions
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 154).
First Actions for a UN 2079 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 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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📋 Copy & Share Field Card
UN 2079 — DiethylenetriamineHAZMAT RADIO NOTE — UN 2079
Product: Diethylenetriamine
Class 8 / Corrosive / ERG 154
PPE: Level B minimum; SCBA required; full chemical-resistant suit, neoprene or butyl rubber gloves; severe skin and eye contact hazard
ISOLATION: ERG 154: isolate spill 25-50m; for large spills consider 300m initial downwind evacuation; if tank/railcar 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 2079 — Diethylenetriamine
Class: 8 | Placard: Corrosive | ERG Guide: 154
Appearance: Clear to yellow viscous liquid with an ammonia-like odor. Corrosive and hygroscopic at room temperature.
Water Reactivity: Soluble in water; exothermic reaction generates heat but not violent
Extinguishing: Alcohol-resistant foam, CO2, dry chemical; avoid direct water streams on spills
PPE: Level B minimum; SCBA required; full chemical-resistant suit, neoprene or butyl rubber gloves; severe skin and eye contact hazard
Isolation: ERG 154: isolate spill 25-50m; for large spills consider 300m initial downwind evacuation; if tank/railcar involved in fire, isolate 800m all directions
— 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/2079 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2079 Diethylenetriamine Cls8 ERG154 | ERG 154: isolate spill 25-50m; for large spills consider 300m initial downwind e | allfirefighter.com/hazmat/un/2079SMS / 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/2079
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Frequently Asked Questions about UN 2079
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; SCBA required; full chemical-resistant suit, neoprene or butyl rubber gloves; severe skin and eye contact hazard
Water reactivity: Soluble in water; exothermic reaction generates heat but not violent. Recommended extinguishing: Alcohol-resistant foam, CO2, dry chemical; avoid direct water streams on spills.
ERG Guide 154 recommendation: ERG 154: isolate spill 25-50m; for large spills consider 300m initial downwind evacuation; if tank/railcar involved in fire, isolate 800m all directions
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.