Amines & Amides Available — Bulk Only

Trimethylhexamethylenediamine (TMD)

CAS 25513-64-8

Trimethylhexamethylenediamine (TMD) is a liquid aliphatic diamine supplied as the commercial mixture of the 2,2,4- and 2,4,4-isomers. It is used primarily as a curing agent for epoxy resins and as a monomer building block for transparent (amorphous) polyamides and polyurethane systems

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CAS Number
25513-64-8
Material Family
Amines & Amides
At a Glance
Material Family
Amines & Amides
Record Type
Polymer fluid
Primary Role
Crosslinking / Curing · Synthesis Intermediate
Functional Roles
Crosslinking / Curing Synthesis Intermediate
Industries Served
Coatings & Construction Industrial Manufacturing Plastics & Polymers
Applications & Use Cases
  • ▸ Aliphatic diamine curing agent for epoxy castings, coatings and adhesives needing long pot life and a clear, low-color film
  • ▸ Monomer building block for transparent (amorphous) polyamides
  • ▸ Diamine chain extender for polyurethane and polyamide systems
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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Chemical Identity
CAS Number
25513-64-8
Synonyms & Trade Names
TMD TMDA 2,2,4-/2,4,4-trimethylhexamethylenediamine 2,2,4-/2,4,4-trimethyl-1,6-hexanediamine trimethylhexane-1,6-diamine Comparable to Vestamin TMD
Full Description

As an epoxy curing agent, TMD delivers a long pot life with a clear, low-color cured film, making it well suited to castings, flooring, adhesives and protective coatings where handling time and optical clarity matter. The branched aliphatic backbone imparts a degree of flexibility and toughness to the cured network compared with shorter-chain diamines. Beyond epoxy curing, TMD serves as a diamine monomer in the production of amorphous, optically clear polyamides and as a chain extender in polyurethane and polyamide chemistry. RawSource supplies TMD in bulk for formulators and polymer producers working in coatings, composites and engineering-plastic intermediates

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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.

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