- ▸ Epoxy curing agent: Cycloaliphatic hardener for light-stable, weather-resistant epoxy networks.
- ▸ Chemical intermediate: Precursor to cycloaliphatic isocyanates such as H12MDI.
- ▸ Adhesion/cohesion promoter: function in formulated systems.
- ▸ Viscosity modifier: function.
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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Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
4,4'-Diaminodicyclohexylmethane (CAS 1761-71-3), also called PACM or H12MDA, is a cycloaliphatic primary diamine. Diamines of this class are used as curing agents (hardeners) for epoxy resins and as chemical intermediates, including the precursor to hydrogenated MDI (H12MDI) for light-stable polyurethanes. Industry references record its functions as plasticizer, viscosity modifier, adhesion/cohesion promoter, and chemical intermediate.
Frequently Asked Questions
What is 4,4'-diaminodicyclohexylmethane (PACM) used for?
4,4'-Diaminodicyclohexylmethane (CAS 1761-71-3), also called PACM or H12MDA, is a cycloaliphatic primary diamine used as a curing agent (hardener) for epoxy resins, giving light-stable, weather-resistant networks. It is also a chemical intermediate, notably the precursor to hydrogenated MDI (H12MDI) for light-stable polyurethanes, and Industry references record plasticizer, viscosity-modifier, and adhesion/cohesion-promoter functions.
Is 4,4'-diaminodicyclohexylmethane the same as methylenebis(cyclohexylamine)?
Yes. 4,4'-Methylenebis(cyclohexylamine) is a synonym for the same compound, CAS 1761-71-3 (PACM / H12MDA). It names the molecule as two cyclohexylamine rings bridged by a methylene group.
What is the CAS number and molecular formula of PACM?
4,4'-Diaminodicyclohexylmethane has CAS number 1761-71-3 and molecular formula C13H26N2, in the Amines & Amides family.
How is PACM shipped under DOT/IMDG regulations?
It is assigned UN 3259 (4,4'-diaminodicyclohexyl methane), a corrosive solid/substance class. Shipments require the corresponding packaging, marking, and documentation; RawSource provides compliant shipping paperwork and the SDS with every order.
What bulk packaging and documentation does RawSource supply for PACM?
RawSource distributes PACM in industrial volumes — drums, totes, and IBCs — with Certificate of Analysis and Safety Data Sheet per lot. Submit a bulk RFQ with your target volume for current pricing and lead time.