GHS Classification: Flammable Liquid (GHS02), Exclamation Mark (GHS07), Health Hazard (GHS08)
Hazard Statements: Highly flammable liquid and vapor; causes serious eye irritation; may cause respiratory irritation; may cause drowsiness or dizziness; suspected of causing cancer.
UN Number: UN 2056
Hazard Class: 3 (Flammable Liquids)
Packing Group: II
GTC-636

Ethers
Tetrahydrofuran
- CAS No.
- 109-99-9
- Catalogue ID
- GTC-636
Tetrahydrofuran, CAS 109-99-9. Source-derived identification, physical data and applications are provided for catalogue reference; request the current specification, COA and SDS for the required grade.
THF; Tetramethylene oxide; Oxolane; Furanidine; Diethylene oxide; Butylene oxide
Supplied catalogue source: GTC-636 · Page 39
Reference data — confirm before ordering or use
The information below is a structured migration from the supplied catalogue snapshot. It is not a current product specification, COA or SDS. Confirm the actual supplier, grade, batch documents, classification, packing and destination requirements for your enquiry.
Basic Information of Tetrahydrofuran
Tetrahydrofuran (CAS No. 109-99-9) is a clear, colorless liquid with a distinctive, ether-like odor. Its cyclic ether structure and high polarity contribute to its exceptional solvent power for a wide range of organic and inorganic compounds:
| CAS No.: | 109-99-9 |
|---|---|
| EC No.: | 203-726-8 |
| Linear Formula: | C₄H₈O |
| Molecular Weight: | 72.11 |
| Appearance: | Clear, colorless liquid |
| Odor: | Characteristic, ether-like |
| Melting Point: | -108.4 °C |
| Boiling point | 66 °C |
| Density: | 0.887 g/mL at 20 °C |
| Solubility: | Completely miscible with water and most organic solvents. |
| Flash Point: | -21 °C |
| Purity: | Available in various grades, including high-purity and stabilized versions, to meet specific industrial and laboratory requirements. |
| RIDADR: | UN 2056 3/PG 2 |
| Chemical Structure: | ![]() |
These properties make THF an excellent choice for applications requiring a powerful, fast-evaporating, and versatile solvent.
Versatile Applications of Tetrahydrofuran
Polymer Production: A primary use is as a precursor for the production of poly(tetramethylene ether) glycol (PTMEG), which is a key component in elastic fibers (spandex), polyurethanes, and polyesters.
PVC Cement & Adhesives: Widely used as a solvent in PVC (polyvinyl chloride) cements for plumbing and pipe bonding, as well as in other specialty adhesives due to its ability to dissolve PVC.
Magnetic Tape & Films: Employed as a solvent in the manufacturing process of magnetic tapes, synthetic leather, and various plastic films and coatings.
Pharmaceutical Industry: A crucial reaction solvent and extractant in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals due to its high solvency for various organic reactions.
Laboratory & Research: An indispensable solvent for Grignard reactions and other organometallic reactions in organic synthesis, as well as for chromatography and analytical purposes.
Coatings & Inks: Used in specialized coatings and printing ink formulations where strong solvency for various resins is required.
Assured Quality: Our THF is rigorously tested to ensure high purity, consistent quality, and stability, meeting or exceeding stringent industry specifications.
Technical Expertise: Our knowledgeable team is always available to provide comprehensive support and answer any technical questions you may have regarding product application, handling, and safety.
Hazards Classification



Confirm the current commercial product record.
Include the required grade or purity, quantity, preferred packing, destination country/port and required document set.
- 01Current specification
- 02Batch or sample COA
- 03Product- and supplier-specific SDS
- 04Packing and shipping review
