H₁₂MDA scientific name 4,4´-diaminodicyclohexylmethane, molecular formula C13H26N2, has three stereoisomers with different thermodynamic properties(trans-trans,cis-cis, cis-trans) and it is an alicyclic amine organic Intermediate.

Compared with the traditional aromatic diamine compounds, H1MDA has an aliphatic ring structure, so it has excellent special properties, such as good oxidation resistance, low dielectric constant, good solubility, low refractive index, low light loss, good flexibility, etc. . Product applications cover HMDI, high-quality epoxy curing agent, polyamide materials and other fields, it has a wide application prospect in the high-tech fields such as optical materials, liquid crystal display materials, optical fiber communication materials and so on. It is also a key monomer for making transparent armoured Bulletproofglass, high-speed train front windows, optical lenses and high-grade spandex.