- ▸ Cycloaliphatic diamine curing agent for epoxy coatings and adhesives, giving fast cure with good color stability and weatherability
- ▸ Crosslinks epoxy resins in flooring, can/coil coatings and fiber-reinforced composites
- ▸ Serves as a diamine chain extender in polyamide and polyurethane systems
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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1,4-Cyclohexanebis(methylamine) (BAC) is a cycloaliphatic amine hardener giving low color, high glass transition and excellent weatherability in epoxy coatings. Identity: CAS 2549-93-1.
What it is
1,4-Cyclohexanebis(methylamine) (CAS 2549-93-1) is a liquid cycloaliphatic diamine. Its ring structure with primary benzylic-type amines balances reactivity with low color and high Tg.
How it cures
Its amines cure epoxy at ambient temperature to a hard, high-Tg, light-stable, chemically resistant network — favored where color, gloss retention and weathering matter. Also a monomer for specialty polyamides.
Applications
BAC is used in high-performance and weatherable epoxy coatings and adhesives and as a specialty monomer. Compare araliphatic PXDA and MCDA.
Forms, grades and handling
BAC is supplied as a clear liquid in drums, IBCs and bulk. Properties are typical reference values; the Certificate of Analysis (CoA) for the lot you buy governs. Amine curing agents are typically corrosive and can sensitize skin — handle per the current Safety Data Sheet (SDS). Each lot ships with CoA, TDS and SDS.
Bulk supply and RFQ
RawSource sources 1,4-Cyclohexanebis direct from producers in bulk, with CoA, TDS and SDS per lot. Tell us your resin system, cure schedule (ambient or heat) and the properties you need (pot life, Tg, flexibility, chemical resistance), and we will quote the right hardener. See selection logic in the epoxy curing agents guide.
Typical Properties
Typical reference values, not a specification; the Certificate of Analysis (CoA) for the lot governs.
| Property | Typical Value |
|---|---|
| Chemical / class | Cycloaliphatic amine hardener |
| Cure role | Ambient cure; low color, high Tg |
| CAS Number | 2549-93-1 |
| Molecular Formula | C8H18N2 |
| Molecular Weight | 142.24 g/mol |
| Handling | Refer to the current SDS |
Regulatory & registration requirements
- TSCA (US):
- REACH (EU): Not determined from public registry
- EC number: 219-840-6
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is 1,4-cyclohexanebis(methylamine) used for?
1,4-Cyclohexanebis(methylamine) (BAC, CAS 2549-93-1) is a cycloaliphatic amine epoxy hardener giving low color, high Tg and excellent weatherability in high-performance coatings and adhesives; it is also a specialty polyamide monomer.
How is bulk 1,4-cyclohexanebis(methylamine) supplied and quoted?
RawSource supplies 1,4-cyclohexanebis(methylamine) in bulk with CoA, TDS and SDS per lot. Pricing is quote-based on grade and volume; submit an RFQ with your resin system and cure schedule.
What is the REACH and TSCA regulatory status of 1,4-Cyclohexanebis(methylamine)?
1,4-Cyclohexanebis(methylamine) (CAS 2549-93-1) is listed as Active on the U.S. EPA TSCA Inventory; its REACH registration status is not determined from the public ECHA registry.