high volatility and a very low freezing point
Tetrahydrofuran (THF) is a clear, colorless, low viscosity liquid with an ether-like odor. THF has high volatility and a very low freezing point. THF is completely miscible with H2O at 20°C.how flammable is thf
THF is a versatile solvent with numerous industrial applications. THF is inhibited by BHT due to its propensity to form peroxides on storage.
THF is produced by cyclodehydration of 1,4-BDO. Lyondell Chemical Company produces 1,4-BDO starting from allyl alcohol in a proprietary process.
Polytetramethylene ether glycol (PTMEG). THF polymerizes under strongly acidic conditions to form PTMEG, which is widely used in the manufacture of polyurethane elastomers and fibers. PTMEG provides excellent flexibility and elasticity for such products. In particular, PTMEG-based polyurethanes are known for their good low-temperature flex properties and hydrolysis resistance.
tape. Solvents are needed to dissolve the original binder polymer and provide a fluid medium for pigment dispersion in tape coatings. THF is rapidly becoming the solvent of choice due to its high purity, excellent solvency and good conductivity values.
Adhesives for leather, plastic sheet film extrusion and molded plastic part assembly. The combination of fast solvent activity, minimal gelling, and low relative viscosity of the resin solution makes THF an attractive solvent choice.
PVC cement. THF-PVC formulation meets NSF standards. THF solvent based cements can be formulated with other solvents and inorganic fillers to control setting time. THF also acts as a PVC-like cleaner before seams are formed.
Vinyl film and cellophane. THF is an excellent solvent for many chlorinated resins used in film-forming applications such as vinyl topcoats, cast vinyl films, and coated cellophane. Such applications rely on THF's ability to solvate polymer resins without unduly increasing viscosity. Furthermore, the high volatility of THF is essential in these applications, as the solvent needs to be completely removed with minimal energy input.
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