HMDA; PACM CAS 1761-71-3

4,4'-Diaminodicyclohexyl methane (PACM;HMDA)

【Chemical Name】4,4'-Diaminodicyclohexyl methane

【Other Name】PACM;HMDA; Bis(4-aminocyclohexyl)methane; Hydrogenated MDA

【CAS No.】1761-71-3

【Molecular Formula】C₁₃H₂₆N₂

【Molecular Weight】210.36

【Product properties】
Colorless to pale yellow transparent liquid or white crystalline solid with low viscosity. A cycloaliphatic diamine featuring excellent light stability, outstanding yellowing resistance, and superior hydrolysis resistance. Offers high reactivity, good flexibility, and exceptional mechanical strength when used in epoxy curing systems.

【Storage】
Store in a tightly sealed container in a cool, dry, and well-ventilated area. Protect from moisture, strong acids, and oxidizing agents.

【Packing】
Available in 190 kg steel drums

【Application】
A versatile cycloaliphatic diamine widely used across multiple industries:

• Epoxy curing agent: Provides excellent weather resistance, gloss retention, and non-yellowing properties for self-leveling flooring, high-performance coatings, marine and protective paints, adhesives, and composite materials

• Polyurethane (PU): Serves as a chain extender and intermediate for light-stable PU elastomers, coatings, and adhesives

• Polyamide synthesis: Used in the production of transparent polyamides and high-performance engineering plastics

• Water treatment: Key intermediate in the manufacture of reverse osmosis membrane materials

• Electrical insulation: Ideal for castings and encapsulations requiring superior dielectric properties and thermal stability