- ▸ Primary+tertiary amine used as a coating catalyst/curing agent for PU and epoxy
- ▸ Reactive amine that both catalyzes and chemically incorporates into the network
- ▸ Used in coatings, adhesives and casting resins
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →3-(Diethylamino)propylamine (DEAPA, N,N-diethyl-1,3-propanediamine; CAS 104-78-9) is a difunctional aliphatic amine with one reactive primary amine and one tertiary amine. That dual functionality — a reactive site plus a built-in catalytic base — makes it an epoxy curing agent/accelerator and a versatile intermediate for surfactants, fuel and lubricant additives, agrochemicals and pharmaceuticals. Identity: PubChem.
What is 3-(diethylamino)propylamine?
DEAPA is a clear liquid amine, (C2H5)2N–(CH2)3–NH2. The primary amine reacts into resins and acylates to amides, while the tertiary amine acts as an internal base/catalyst. It is a strong base with the characteristic amine odor and is corrosive.
Applications by sector
Epoxy & coatings. A curing agent and accelerator for epoxy resins in coatings, adhesives and composites, where the tertiary amine speeds cure. Surfactants & intermediates. A building block for amido-amine and amphoteric surfactants, corrosion inhibitors, fuel and lubricant additives, dyes, agrochemicals and pharmaceutical intermediates. Catalysis / acid-gas. A tertiary-amine catalyst and acid-gas scavenger. Use is defined by the downstream reaction; specify grade and purity.
Forms and grades
Supplied as a clear liquid; confirm assay and grade on the RFQ. Related amines: dimethylamine.
Handling and documentation
DEAPA is a corrosive, combustible amine with a strong odor; handle with appropriate PPE and ventilation per the current Safety Data Sheet (SDS). Each lot ships with a Certificate of Analysis (CoA).
Bulk supply and RFQ
RawSource supplies 3-(diethylamino)propylamine in bulk to coatings, surfactant and chemical-synthesis buyers, with CoA and SDS per lot. Submit an RFQ with your grade and target quantity.
Typical Properties
Typical reference values, not a specification; the Certificate of Analysis (CoA) for the lot governs.
| Property | Typical Value |
|---|---|
| Chemical Name | 3-(Diethylamino)propylamine (DEAPA) |
| CAS Number | 104-78-9 |
| Molecular Formula | C7H18N2 |
| Functionality | Primary amine + tertiary amine (difunctional) |
| Appearance | Clear liquid; amine odor |
| Solubility | Miscible with water and organics |
| Character | Strong base / reactive amine |
| Hazard / handling | Corrosive, combustible — refer to the current SDS |
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 203-236-4
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is 3-(diethylamino)propylamine used for?
DEAPA (CAS 104-78-9) is used as an epoxy curing agent/accelerator and as an intermediate for amido-amine and amphoteric surfactants, corrosion inhibitors, fuel and lubricant additives, agrochemicals and pharmaceuticals.
Why does DEAPA have two different amine groups?
Its primary amine reacts into resins or acylates to amides, while its tertiary amine acts as a built-in base/catalyst — the combination is what makes it both a reactive building block and an accelerator.
What is the CAS and formula of DEAPA?
It is N,N-diethyl-1,3-propanediamine, CAS 104-78-9 (PubChem CID 61011), molecular formula C7H18N2. The CoA documents assay and grade.
Is DEAPA hazardous?
Yes — it is a corrosive, combustible amine with a strong odor; handle with appropriate PPE and ventilation per the SDS.
How is bulk DEAPA supplied and quoted?
RawSource supplies it as a liquid in bulk with CoA and SDS per lot. Pricing is quote-based on grade and volume; submit an RFQ with your target quantity.
What is the REACH and TSCA regulatory status of 3-(Diethylamino)propylamine?
3-(Diethylamino)propylamine (CAS 104-78-9) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 203-236-4).