Aromatic amines are the byproducts of manufacturing plastics, different industrial chemicals, and other products. They are usually divided into three different categories and have been classified as human carcinogens. They can be found in industrial and manufacturing plants, hair dyes, tobacco smoke. Aromatic amines are also mainly found in industries such as iron, steel, dyes, pharmaceuticals, textiles industries, and rubber factories. They are also found in tobacco smoke, diesel exhaust and are produced by burning wood.
Aromatic amines have slightly weaker basicity compared to aliphatic amines. They are likely to cure slowly at room temperature. Usually, the curing of aromatic amines requires heating them in two steps. Aromatic amines provide excellent heat resistance, great mechanical properties, and tensile strength. Besides, nitroaromatic compounds include many explosives, pesticides, and different pharmaceuticals. These compounds are readily reduced under environmental conditions into aromatic amino compounds. Any source of aromatic amino compound is a significant concern for the environment as this class of compounds is characterized by high carcinogenicity.