
Amines are organic compounds from derivatives of ammonia in which either one, two, or all three hydrogen atoms are replaced by organic groups. Depending on the number of hydrogen atoms replaced by organic compounds such as alkyl or aryl group, they are called primary amines, secondary amines and tertiary amines for one, two and all three hydrogen atoms, respectively. Some amines include methylamine, dimethylamine, and trimethylamine. Aromatic amines, known as Anilines, are byproducts in manufacturing compounds of pesticides, dyes, polyurethane foams, and so on. Important amines include amino acids, biogenic amines, and aniline. Amines are used in pharmaceutical for medicines and drugs. They are also used in crop protections, dyes and water purifications.