Amines & Amides Available — Bulk Only

Tetraethylenepentamine (TEPA)

TEPA
CAS 112-57-2 · Formula C8H23N5 · MW 189.30 g/mol

Tetraethylenepentamine is a five-nitrogen polyethyleneamine used mainly as an epoxy curing agent and as an intermediate for fuel/lube additives, surfactants and corrosion inhibitors.

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UN Number
UN 2320
Hazard Class
Class 8
At a Glance
Material Family
Amines & Amides
Record Type
Pure compound
Primary Role
Crosslinking / Curing · pH Adjustment
Solubility
≥ 100 mg/mL at 22 °C
Applications & Use Cases
  • Epoxy curing agent: hardener for epoxy resins
  • Chemical intermediate: lube/fuel additives, surfactants, corrosion inhibitors, imidazolines and polyamide resins
  • Chelating agent & acid-gas solvent
  • Papermaking: wet-strength resins; synthetic-rubber-latex coagulation aid
Physical Properties
Melting Point
-40 °C
Boiling Point
340 °C at 760 mmHg
Density
0.998 at 20 °C
Solubility
≥ 100 mg/mL at 22 °C
Vapor Pressure
< 0.01 mmHg at 20 °C
Flash Point
163 °C
pH
ALKALINE
Safety & Handling
Full SDS available on request

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.

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DOT / UN Transport Classification
DOT hazard class 8 placard
UN / DOT NumberUN 2320
Hazard Class / DivisionClass 8
Packing GroupIII
Proper Shipping NameTetraethylenepentamine

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

Chemical Identity
CAS Number
112-57-2
Molecular Formula
C8H23N5
Molecular Weight
189.30 g/mol
IUPAC Name
N'-[2-[2-(2-aminoethylamino)ethylamino]ethyl]ethane-1,2-diamine
PubChem CID
InChI Key
FAGUFWYHJQFNRV-UHFFFAOYSA-N
Synonyms & Trade Names
TETRAETHYLENEPENTAMINE Tetren 1,4,7,10,13-Pentaazatridecane Tetraethylpentylamine Tetraethylene pentamine 1,11-Diamino-3,6,9-triazaundecane 3,6,9-Triazaundecamethylenediamine DEH 26 3,6,9-Triazaundecane-1,11-diamine Ancamine TEPA TETRAEN INSULCURE 9 1,2-Ethanediamine, N-(2-aminoethyl)-N'-[2-[(2-aminoethyl)amino]ethyl]- 1,2-Ethanediamine, N-(2-aminoethyl)-N'-(2-((2-aminoethyl)amino)ethyl)-
Full Description

Tetraethylenepentamine is a polyfunctional ethyleneamine with five amine nitrogens, used primarily as a curing agent (hardener) for epoxy resins. It is a chemical intermediate for lubricating-oil and fuel additives, surfactants, corrosion inhibitors, imidazolines and reactive polyamide resins, and it serves as a chelating agent and as a solvent for acid gases. Additional uses include wet-strength resins in papermaking and coagulation aids for synthetic rubber latex.

Frequently Asked Questions

What is tetraethylenepentamine (TEPA) used for?

TEPA (CAS 112-57-2) is a polyethylene polyamine used as an epoxy curing agent and hardener, as a chemical intermediate for lube-oil and fuel additives, corrosion inhibitors, chelating agents, and surfactants, and in the synthesis of polyamides and other nitrogen-containing derivatives.

Is tetraethylenepentamine a base or an acid?

TEPA is a base. With five amine nitrogens (formula C8H23N5) it is a strongly basic polyamine and reacts as a base, which underlies its use as an epoxy curative and acid-gas scavenger.

What does tetraethylenepentamine look like?

TEPA is typically a viscous liquid ranging from yellow to amber in color. Exact appearance and color can vary by grade and oligomer distribution; refer to the product data sheet for specifications.

How does TEPA ship under DOT?

TEPA is assigned UN 2320 (TETRAETHYLENEPENTAMINE), a corrosive liquid. Confirm the packing group, packaging, and documentation against the current SDS before shipping.

What packaging and documentation does RawSource supply?

RawSource supplies TEPA in bulk drums, totes, and IBCs with CoA and SDS available on request. Request a bulk quote with your target grade and volume for current pricing and lead time.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.