401757

Tetrahydrofuran

anhydrous, ≥99.9%, inhibitor-free

• Synonym(s): THF, Butylene oxide, Oxolane, Tetramethylene oxide
• Empirical Formula (Hill Notation): C₄H₈O
• CAS Number: 109-99-9
• Molecular Weight: 72.11
• Beilstein: 102391
• EC Number: 203-726-8
• MDL number: MFCD00005356
• PubChem Substance ID: 57649919
• NACRES: NA.21

Properties

• grade: anhydrous
• Quality Level: 200
• vapor density: 2.5 (vs air)
• vapor pressure: 114 mmHg ( 15 °C); 143 mmHg ( 20 °C)
• Assay: ≥99.9%
• form: liquid
• autoignition temp.: 610 °F
• expl. lim.: 1.8-11.8 %
• impurities: ≤20 ppm peroxide (as H₂O₂); <0.002% water; <0.005% water (100 mL pkg)
• evapn. residue: <0.0005%
• refractive index: n20/D 1.407 (lit.)
• pH: ~7
• bp: 65-67 °C (lit.)
• mp: −108 °C (lit.)
• solubility: H₂O: soluble
• density: 0.889 g/mL at 25 °C (lit.)
• SMILES string: C1CCOC1
• InChI: 1S/C4H8O/c1-2-4-5-3-1/h1-4H2
• InChI key: WYURNTSHIVDZCO-UHFFFAOYSA-N

Description

General description

Tetrahydrofuran (THF) is a saturated cyclic ether with a potential use as a biofuel. Its combustion studies have been investigated. Reports suggest that it is a better promoter than 1,3 dioxolane for CO₂-hydrate formation.

Application

Tetrahydrofuran was used as a solvent in the formation of diacetylinic polymers.
It may be used in the following processes:

• Formation of butyrolactone (BTL) by green oxidation method.
• Aqueous THF solution to modify the polystyrene surface by swelling process.
• As a solvent for lignin depolymerization to isolate phenolic monomer.

Packaging

View returnable container options.

Other Notes

"Greener alternatives are available for many THF applications, 2-Methyltetrahydrofuran (673277) and Cyclopentyl methyl ether (791962)

Read more about THF alternatives:

2-Methyltetrahydroun (2-MeTHF): A biomass-Derived solvent with Broad Applications in Organic Chemistry

The toxicological assessment of cyclopentyl methyl ether (CPME) as a green solvent"

Pure-Pac^® II containers require the Micromatic MacroValve coupler for dispensing solvents, Z560723.

Legal Information

Pure-Pac is a registered trademark of Sigma-Aldrich Co. LLC

Safety Information

• Pictograms: GHS02,GHS07,GHS08
• Signal Word: Danger
• Hazard Statements: H225 - H302 - H319 - H335 - H336 - H351
• Precautionary Statements: P202 - P210 - P233 - P301 + P312 - P305 + P351 + P338 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Carc. 2 - Eye Irrit. 2 - Flam. Liq. 2
• Supplementary Hazards: EUH019
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point(F): -6.2 °F - closed cup
• Flash Point(C): -21.2 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves