UN 2684 — Diethylaminopropylamine
Placard: Flammable. ERG Guide 132. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2684 is Diethylaminopropylamine, a flammable corrosive amine assigned to ERG Guide 132. Vapor flashback, alkaline burns and runoff are key concerns.
Hazard overview: FLAMMABLE and CORROSIVE amine liquid; vapors may ignite and form explosive mixtures with air. Liquid and vapor can burn eyes, skin and respiratory tissue. Vapors are heavier than air and may travel to ignition sources and flash back.
Response guidance: For UN 2684, isolate the area, avoid skin contact and use SCBA where dust, vapor, mist or fire is present. Control ignition or moisture hazards as applicable and contain toxic/corrosive runoff.
Firefighter training notes: Training for UN 2684 should emphasize toxic exposure routes, SCBA use, dust/vapor monitoring, fire behavior, decontamination, runoff containment and SDS verification. Use ERG 132, SDS and local SOP.
Regulatory context: Diethylaminopropylamine is regulated as a hazardous material for transport and emergency response. Storage, exposure, spill reporting, waste and fire-code duties depend on quantity, concentration and jurisdiction; verify shipping papers, SDS and local authority requirements.
Storage & handling: Diethylaminopropylamine should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 2684 Quick Details
Common Hazards of UN 2684
- FLAMMABLE and CORROSIVE amine liquid; vapors may ignite and form explosive mixtures with air.
- Liquid and vapor can burn eyes, skin and respiratory tissue.
- Vapors are heavier than air and may travel to ignition sources and flash back.
- Mixing with water may generate heat and spread alkaline/corrosive contamination.
- Runoff to sewers may create fire, explosion and corrosive contamination hazards.
- Fire may produce nitrogen oxides and irritating/toxic smoke.
- Containers may rupture or explode when heated.
Chemical Identity & Physical Properties
Colorless to pale yellow liquid with an amine-like, fishy odor. Highly hygroscopic and corrosive.
| Also known as | 3-(Diethylamino)propylamineN,N-Diethyl-1,3-propanediamineDEAPADiethylaminopropylamine |
| CAS Number | 104-78-9 |
| Appearance | Colorless to pale yellow liquid with an amine-like, fishy odor. Highly hygroscopic and corrosive. |
| Flash Point | 42C (108F) |
| Boiling Point | 169C (336F) |
| Vapor Density | 4.5 (heavier than air) |
| Water Reactivity | Soluble in water, exothermic reaction generates heat but not violent |
Fireground Response Guidance — UN 2684
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, mist, dust, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 2684 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Eliminate ignition sources if this can be done safely.
- Avoid breathing vapor, dust, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 132, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 2684 — DiethylaminopropylamineUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.