Hexamethylenediamine (HMDA) is an organic compound having chemical formula H2N (CH2)6NH2. It is a colorless solid with strong amine odor similar to that of pipiridine. It is synthesized from adiponitrile and has numerous applications in chemical industry. Almost 90% of the produced HMDA is utilized in the production of nylon 66. The non-nylon applications of HMDA includes high performance polyurethanes paints, epoxy curing agents, petrochemicals additives and coatings. It also has applications as corrosion and scale inhibitors in water treatment plants. HMDA is not only used for the production of nylon 66, but also used along with dicarboxylic acids for the production of nylon 69, nylon 610, and nylon 612. Over the years the demand for bio based HMDA has increased for the production of nylon 66 owing to the green revolution. The market for HMDA can be segmented on the basis of application into nylon synthesis, coatings, biocides, and others. Based on end user, the market for HMDA has been divided in to fiber, textile, automotive, plastics, and others.