| Formula / Notation | C4H8O2S |
|---|---|
| CAS Number | 126-33-0 |
| Molecular Weight | 120.17 |
| Melting Point | 79 °F (USCG, 1999) |
| Boiling Point | 545 °F at 760 mmHg (USCG, 1999) |
| Density | 1.26 at 86 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | Partially miscible with octanes, olefins, naphthenes; miscible with water, Acetone, toluene at 30 °C |
| Appearance | Sulfolane is a colorless oily liquid with a weak oily odor. Solidifies (freezing point is 79 °F) and sinks on first contact with water, then mixes with water. (USCG, 1999) |
| Also Known As | thiolane 1,1-dioxide; 126-33-0; Tetrahydrothiophene 1,1-dioxide; Tetramethylene sulfone; Sulfolan; Thiophene, tetrahydro-, 1,1-dioxide; 1,1-Dioxothiolan; Sulpholane; Sulfalone; Sulphoxaline |
| Category | Solvents |
What is Sulfolane?
Sulfolane is a member of the class of tetrahydrothiophenes that is tetrahydrothiophene in which the sulfur has been oxidised to give the corresponding sulfone. A colourless, high-boiling (285C) liquid that is miscible with both water and hydrocarbons, it is used as an industrial solvent, particularly for the purification of hydrocarbon mixtures by liquid-vapour extraction. It has a role as a polar aprotic solvent. It is a sulfone and a member of tetrahydrothiophenes. It derives from a hydride of a tetrahydrothiophene.
Formula & Notation
IUPAC Name: thiolane 1,1-dioxide
Other Names / Synonyms: thiolane 1,1-dioxide; 126-33-0; Tetrahydrothiophene 1,1-dioxide; Tetramethylene sulfone; Sulfolan; Thiophene, tetrahydro-, 1,1-dioxide; 1,1-Dioxothiolan; Sulpholane; Sulfalone; Sulphoxaline
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 79 °F (USCG, 1999) |
| Boiling Point | 545 °F at 760 mmHg (USCG, 1999) |
| Density | 1.26 at 86 °F (USCG, 1999) - Denser than water; will sink |
| Molecular Weight | 120.17 |
| Solubility | Partially miscible with octanes, olefins, naphthenes; miscible with water, Acetone, toluene at 30 °C |
| Appearance | Sulfolane is a colorless oily liquid with a weak oily odor. Solidifies (freezing point is 79 °F) and sinks on first contact with water, then mixes with water. (USCG, 1999) |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Sulfolane is a member of the class of tetrahydrothiophenes that is tetrahydrothiophene in which the sulfur has been oxidised to give the corresponding sulfone. A colourless, high-boiling (285C) liquid that is miscible with both water and hydrocarbons, it is used as an industrial solvent, particularly for the purification of hydrocarbon mixtures by liquid-vapour extraction. It has a role as a polar aprotic solvent. It is a sulfone and a member of tetrahydrothiophenes. It derives from a hydride of a tetrahydrothiophene.
Used as a reaction solvent in organic synthesis, extraction solvent, cleaning agent, or in pharmaceutical manufacture.
Flammable solvent. Keep away from heat, sparks, and open flame. Use in well-ventilated area or fume hood. Consult SDS before use.
The formula or notation for Sulfolane is: C4H8O2S