Toluene diamine (TDA) is an organic compound that is commonly used in the production of polyurethane foams, coatings, adhesives, and elastomers. It is a member of the family of aromatic diamines, which are important building blocks for the production of various chemicals and materials. It is prepared by the hydrogenation of dinitrotoluene. TDA is used as a curing agent in the production of polyurethane foams, coatings, adhesives, and elastomers. The reaction between TDA and polyols or other isocyanates results in the formation of a polyurethane network, which provides the desired properties such as strength, flexibility, and insulation. TDA is also used as a crosslinking agent in the production of epoxy resins, which are commonly used in the aerospace, automotive, and electronics industries.