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Tetrahydrofuran (THF)

THF from Furan THF from Furan (Image by DalinYebo)
Tetrahydrofuran (THF) is made by catalytic hydogenation of furan


  • Molecular Weight:

72.104 g/mole

  • Boiling Point (760 mm Hg):

66 oC

  • Freezing Point:

-108.5 oC

  • Specific Gravity d20/4:


  • Refractive Index nD20:


  • Flash Point (closed cup):

-22 oC

  • Ignition Temperature:

260 oC

  • Solubility in Water at 20 oC:


  • Azeotrope with water at 1 ATM:

5.3% by weight of water

Boiling Point 63.5 oC

  • Toxicity: THFA rates as one of the least toxic solvents, but it has a narcotic effect similar to that of diethyl ether. It gives rise to skin and mucous membrane irritation. As it dissolves the upper layers of the skin, hand protection should be provided to prevent contact. The occupational exposure limit is 200 ppm.

 Additional Information

Dr K J Zeitsch: The Chemistry and Technology of Furfural and its Many By-Products

For Health and Safety information and guidelines, we suggest you refer to www sites such as the one of US Department of Labor's Occupational Safety & Health Administration (OSHA)