Names | |
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Preferred IUPAC name
1λ6-Thiolane-1,1-dione | |
Other names
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Identifiers | |
3D model (JSmol)
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ChEBI | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.004.349 |
EC Number |
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PubChem CID
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RTECS number |
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UNII | |
UN number | 3334 |
CompTox Dashboard (EPA)
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Properties | |
(CH2)4SO2 | |
Molar mass | 120.17 g·mol−1 |
Appearance | Colorless liquid |
Density | 1.261 g/cm3, liquid |
Melting point | 27.5 °C (81.5 °F; 300.6 K) |
Boiling point | 285 °C (545 °F; 558 K) |
miscible | |
Viscosity | 0.01007 Pa·s at 25 °C |
Structure | |
4.35 D | |
Hazards | |
GHS labelling: | |
Warning | |
H302 | |
P264, P270, P301+P312, P330, P501 | |
NFPA 704 (fire diamond) | |
Flash point | 165 °C (329 °F; 438 K) |
528 °C (982 °F; 801 K) | |
Related compounds | |
Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sulfolane (also tetramethylene sulfone, systematic name: 1λ6-thiolane-1,1-dione) is an organosulfur compound, formally a cyclic sulfone, with the formula (CH2)4SO2. It is a colorless liquid commonly used in the chemical industry as a solvent for extractive distillation and chemical reactions. Sulfolane was originally developed by the Shell Oil Company in the 1960s as a solvent to purify butadiene.[1][2] Sulfolane is a polar aprotic solvent, and it is miscible with water.