Eicosane is a straight-chain hydrocarbon with the chemical formula C20H42. It belongs to the group of compounds known as alkanes, which are saturated hydrocarbons. Eicosane consists of 20 carbon atoms and 42 hydrogen atoms, making it a solid at room temperature. It is commonly found in various natural sources, including certain types of waxes. Eicosane is often used in scientific research and industrial applications, particularly in the study of phase transitions and as a standard in calorimetry. Its properties make it useful in the formulation of certain products, such as cosmetics and lubricants, where its waxy texture can be beneficial.