Tetrahydrofuran
CAS 109-99-9C4H8O72.11 g/mol
Oxolane is a cyclic ether that is butane in which one hydrogen from each methyl group is substituted by an oxygen. It has a role as a polar aprotic solvent. It is a volatile organic compound, a member of oxolanes, a saturated organic heteromonocyclic parent and a cyclic ether.
IUPAC: oxolane
PubChem
Physical & Chemical Properties
| Melting Point | -163.3 °F (NTP, 1992) |
| Boiling Point | 151 °F at 760 mmHg (NTP, 1992) |
| Density | 0.888 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Solubility | greater than or equal to 100 mg/mL at 68 °F (NTP, 1992) |
| Flash Point | 6 °F (NTP, 1992) |
| Vapor Pressure | 114 mmHg at 59 °F ; 145 mmHg at 68 °F (NTP, 1992) |
| Appearance | Tetrahydrofuran appears as a clear colorless liquid with an ethereal odor. Less dense than water. Flash point 6 °F. Vapors are heavier than air. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2932
Data: UN Comtrade
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