Diphenyl ether is an organic compound with the chemical formula C12H10O. It consists of two phenyl groups connected by an oxygen atom. This colorless liquid is commonly used as a solvent and in the production of various chemicals, including pesticides and dyes. In addition to its industrial applications, diphenyl ether is also found in some household products, such as cleaning agents and fragrances. Its properties make it useful in high-temperature applications, as it has a high boiling point and good thermal stability.