Organotin refers to a group of chemical compounds that contain tin bonded to carbon and hydrogen atoms. These compounds are often used in various industrial applications, including as stabilizers in plastics, biocides in antifouling paints, and as catalysts in chemical reactions. Organotin compounds can be toxic to aquatic life and have raised environmental concerns due to their persistence in ecosystems. The most common types of organotin compounds include tributyltin (TBT) and triphenyltin (TPT). These substances have been widely used in marine coatings to prevent the growth of barnacles and other organisms on ships. However, due to their harmful effects on marine life, many countries have implemented regulations to limit their use.