Morpholine is a colorless, volatile liquid with a slightly ammoniacal odor. It is used in the production of dyes and in the manufacture of dyes, rubber, pharmaceuticals and other chemicals. It can also be used as a solvent, surfactant, corrosion inhibitor, and as an additive to gasoline, diesel and other fuels. It is also used in the laboratory synthesis of potassium permanganate, a purple-colored inorganic compound that is used as an oxidizing agent in various industrial processes.