Dioxane, an organic compound, also known as dioxane, 1,4-dioxane, is an organic substance, the molecular formula is C4H8O2. It is a colorless and transparent liquid, slightly fragrant, miscible with water, miscible most organic solvents. The compound is used in the manufacture of special fine chemicals such as medicine, cosmetics, and fragrance, as well as as a solvent, reaction medium, and extraction agent in scientific research.
Tetrahydrofuran is a heterocyclic organic compound with the molecular formula C4H8O. Tetrahydrofuran belongs to ethers and is the complete hydrogenation product of furan. It is a colorless, water-miscible organic liquid with small viscosity at normal temperature and pressure. Because of its long liquid range, it is a commonly used medium polar aprotic solvent. Its main use is as a precursor of high molecular polymers.