4,4'-Methylenedianiline

4,4'-Methylenedianiline (MDA) is a chemical compound used mainly in the production of polyurethane foams, adhesives, and coatings. It consists of two aniline molecules connected by a methylene bridge, giving it a distinctive structure. While useful industrially, MDA is considered hazardous because it can cause health problems, including skin irritation and more serious issues like liver damage and cancer with prolonged exposure. Safety measures are essential when handling MDA, and it is regulated carefully to minimize health risks to workers and the environment.