- ▸ Cycloaliphatic diamine curing agent for epoxy resins, giving a high-Tg, weatherable cured network for coatings and composites
- ▸ Used as a hardener in clear/UV-stable coatings where aromatic amine yellowing is unacceptable
- ▸ Diamine chain extender for polyurethane and polyamide 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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Methylcyclohexanediamine (MCDA) is a cycloaliphatic diamine hardener giving a balance of reactivity, low color and good chemical and weathering resistance in epoxy systems. Identity: CAS 13897-55-7.
What it is
Methylcyclohexanediamine (CAS 13897-55-7) is a liquid methyl-substituted cyclohexane diamine. The ring and methyl branch give moderate reactivity, low viscosity and good color.
How it cures
Its amines cure epoxy at ambient temperature with a useful balance of pot life, hardness, chemical resistance and weatherability — a versatile cycloaliphatic hardener for coatings and composites.
Applications
MCDA is used in epoxy coatings, composites and adhesives needing balanced cycloaliphatic performance. Compare BAC and MPMD.
Forms, grades and handling
MCDA 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 Methylcyclohexanediamine 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; balanced |
| CAS Number | 13897-55-7 |
| Molecular Formula | C7H16N2 |
| Molecular Weight | 128.22 g/mol |
| Handling | Refer to the current SDS |
Regulatory & registration requirements
- TSCA (US):
- REACH (EU): Not determined from public registry
- EC number: 237-666-9
TSCA Inventory flag PMN: a commenced PMN (premanufacture notice) substance (EPA flag legend).
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is methylcyclohexanediamine (MCDA) used for?
Methylcyclohexanediamine (MCDA, CAS 13897-55-7) is a cycloaliphatic amine epoxy hardener giving balanced reactivity, low color and good chemical/weathering resistance in coatings, composites and adhesives.
How is bulk methylcyclohexanediamine supplied and quoted?
RawSource supplies methylcyclohexanediamine 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 Methylcyclohexanediamine (MCDA)?
Methylcyclohexanediamine (MCDA) (CAS 13897-55-7) is listed as Active on the U.S. EPA TSCA Inventory; its REACH registration status is not determined from the public ECHA registry.