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Name: Tetrahydrofuran (THF)
Brand names: Tetrahydrofuran
CAS number: 109-99-9
EC number: 203-726-8
Molecular formula: C4H8O
Uses and Applications
A major use of Tetrahydrofuran(THF) is in the production of Polytetramethylene Ether Glycol (PTMEG), which is a polymer used extensively to manufacture urethane elastomers and fibers. PTMEG provides exceptional flexibility and elasticity to such products.
Tetrahydrofuran(THF) is also a versatile solvent with numerous applications in areas such as adhesives, vinyl films and cellophanes, industrial resins, elastomers, coatings and printing inks. A specific use of THF is in the formulation of PVC cements. THF solvent cements can be formulated with additional solvents and inorganic fillers to control set time. THF can also function as a PVC-type cleaner before joint formation.
Tetrahydrofuran(THF) is frequently utilized as a solvent in many pharmaceutical synthetic procedures because of its broad solvency for polar and non-polar compounds. In many cases, THF makes higher yields and faster reaction rates possible. In addition, THF’s high volatility and purity facilitate solvent removal without leaving residues in the desired product.
Tetrahydrofuran(THF) is used in consumer products as a component of cleaning fluids, paint removers and stripping fluids, functional fluids, lacquers and coatings, adhesives, and as functional fluids and corrosion inhibitors. It is also used professionally for many of these purposes.
Physical / Chemical Properties
THF is a colorless liquid with an ether-like odor at room temperature. The substance is highly flammable with a flash point of -21°C (6°F). The boiling and freezing points of THF are 65°C (149°F) and -108°C (-162°F) respectively. Due to its tendency to form peroxides during storage, THF is inhibited with an antioxidant. THF has been classified as hazardous under GHS (Globally Harmonized System on Classification and Labeling) for its high flammability.
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