4,4′-Diaminodimethane Overview 4,4′-diaminodiphenylmethane (4,4′-Diaminodiphenylmethane, referred to as MDA) is an important organic compound and is widely used in high-performance composite materials, plastics, rubbers and coatings. The molecular structure of MDA is connected by two rings through a methylene group, each with an amino functional group on each ring, and the chemical formula is C13H14N2. This...