Sulfolane

• CAT Number: R061850
• CAS Number: 126-33-0
• Molecular Formula: C4H8O2S
• Molecular Weight: 120.17
• Purity: ≥95%
• Synonyms: 1,1-Dioxothiolan; Bondelane A; Bondolane A; Cyclic Tetramethylene Sulfone; Cyclotetramethylene Sulfone; NSC 46443; Sulfolan; Sulfolane SG; Sulpholane; Tetrahydrothiophene 1,1-Dioxide; Tetrahydrothiophene S,S-Dioxide; Tetrahydrothiophene Dioxide; Tetr
• Storage: Store at RT
• IUPAC Name: thiolane 1,1-dioxide
• InChI: InChI=1S/C4H8O2S/c5-7(6)3-1-2-4-7/h1-4H2
• InChIKey: HXJUTPCZVOIRIF-UHFFFAOYSA-N
• SMILES: C1CCS(=O)(=O)C1

Sulfolane (CAT: R061850) is a highly polar, aprotic organosulfur solvent known for its exceptional thermal and chemical stability. It features a five-membered saturated ring with a sulfone functional group, granting it strong solvating power for both organic and inorganic compounds. Sulfolane is widely used in the petrochemical industry, particularly for extractive distillation and aromatic extraction from hydrocarbon mixtures. Its low vapor pressure, high boiling point, and excellent dielectric properties also make it useful in electrochemistry, polymer processing, and pharmaceutical synthesis. Environmentally persistent and water-miscible, sulfolane is prized for its efficiency in demanding reaction conditions and solvent systems.