Di Phenyl Oxide is known as phenylenediamine, is a chemical compound that belongs to the class of aromatic amines. It is featured by a benzene ring with two amino (NH2) groups attached at different positions on the ring. This dye is mainly used in the production of different dyes and pigments. It is particularly important in the textile and hair dye industries. Also, it is used as intermediate in the production of different types of rubber and plastics. Di Phenyl Oxide can act as a crosslinking agents, helping to enhance the mechanical properties of the materials.