Substance profile
Tetrahydrothiophene-1,1-dioxide
Tetrahydrothiophene-1,1-dioxide is a white or creamy white, crystalline powder and is odorless.
01 · Identification
What Tetrahydrothiophene-1,1-dioxid… is
Tetrahydrothiophene-1,1-dioxide is a white or creamy white, crystalline powder and is odorless. It boils at 285 °C, melts at 26.1 °C.
Under the GHS it carries the signal word Warning.
Other names for Tetrahydrothiophene-1,1-dioxid…
- sulpholane
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
03 · Physical and chemical properties
Tetrahydrothiophene-1,1-dioxid… properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 285 °C (545 °F) | HSDB | |
| 285 °C (545 °F) | at 760 mmHg | CAMEO | |
| Melting point | 26.11 °C (79 °F) | CAMEO | |
| 27.6 °C (81.7 °F) | range, midpoint shown | HSDB | |
| Density | 1.261 g/cm³ | at 25 °C | DOE PAC |
| 1.2606 g/cm³ | at 30 °C | HSDB | |
| 1.26 g/cm³ | at 30 °C | CAMEO | |
| Solubility | Freely soluble in alcohol, soluble in dilute mineral acids | HSDB | |
| Partially miscible with octanes, olefins, naphthenes; miscible with water, Acetone, toluene at 30 °C | at 30 °C | HSDB | |
| Vapor pressure | 0.0062 mmHg | at 27.6 °C, Extrapolated | HSDB |
| 0.0062 mmHg | Haz-Map | ||
| Vapor pressure: 5 mm @ 118 °C | at 118 °C | HSDB | |
| Flash point | 177 °C (350.6 °F) | HSDB | |
| 165.56 °C (330 °F) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Tetrahydrothiophene-1,1-dioxid…
Incompatible materials
Nitronium tetrafluoroborate /is potentially explosive/ in sulfolane.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Mixing SULFOLANE in equal molar portions with any of the following substances in a closed container caused the temperature and pressure to increase: chlorosulfonic acid and oleum [NFPA 1991]. With nitrating agents (nitronium tetrafluoroborate in sulfolane) very highly exothermic reactions are known to occur [J. Org. Chem., 1978, 43, 4677].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Tetrahydrothiophene-1,1-d… in the storage compatibility matrix →