C9H20 is a chemical compound known as nonane, which is part of the alkane family. It consists of nine carbon atoms and twenty hydrogen atoms, making it a straight-chain hydrocarbon. Nonane is a colorless liquid at room temperature and is commonly found in crude oil and natural gas. Nonane is used in various applications, including as a solvent and in the production of fuels. It can also serve as a reference compound in the study of combustion and energy content. Its structure allows it to be relatively stable, making it useful in industrial processes and research related to hydrocarbons and petroleum.