The following pages on the English Wikipedia use this file pages on other projects are not listed :. You cannot overwrite this file. Other Instructions. THF is considered a relatively nontoxic solvent, with the median lethal dose close to that for acetone. Freshly distilled THF. Cancel Save. Hidden categories: All free media Files with no machine-readable description Files with no machine-readable author Files with no machine-readable source. If the THF tests positive for peroxides, but there is no visible precipitate in the ether, it's possible to neutralize the dissolved peroxides.
Common Chemistry Substance Details Poly(oxy1,4butanediyl), αhydroωhydroxy
Polytetrahydrofuran, also called poly(tetramethylene ether) glycol or poly(tetramethylene oxide), is a chemical compound with formula nOH2 or. Summary.
Poly(tetramethylene ether) glycol File usage. The following pages on the English Wikipedia use this file (pages on other projects are not listed).
PTMG (Poly(tetramethylene ether)glycol / PTMG) is a linear polyether glycol with hydroxyl groups on both ends. As a polyol, it reacts readily with isocyanates (for example MDI, TDI), etc. to make resins with excellent properties. PTMG is a linear polyether glycol with hydroxyl.
THF can be produced by acid-catalyzed dehydration of 1,4-butanediol.
Polytetramethylene ether glycol wiki
|Industrially is made via acid-catalyzed dehydration of 1,4-butanediol, the latter being classified as a controlled substance in certain countries and US states.
Video: Polytetramethylene ether glycol wiki Glycol and Chlorine Reaction
Sodium hydroxide pellets are usually added to precipitate the resulting peroxides. Start a Wiki. The product is commercially available as polymers of low average molecular weightsbetween and daltons.
From Wikipedia, the free encyclopedia. This licensing tag was added to this file as part of the GFDL licensing update. CAS Number.
📌 Poly(tetramethylene ether) glycol
It is also known as PTMEG or polytetrahydrofuran and various tradenames such as Terathane and PolyTHF. One of its CAS Registry. In the presence of strong acids, THF converts to a linear polymer called poly(tetramethylene ether) glycol (PTMEG), also known as polytetramethylene oxide. ether) glycol, Poly(tetramethylene ether)diol, Poly(tetramethylene glycol), PolytetrahydrofuranPolytetramethylene glycol ether with butanediol.
THF is considered a relatively nontoxic solvent, with the median lethal dose close to that for acetone.
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Views Read Edit View history. Miscible with acetonebenzenechloroformdiethyl etherethanolmethanoltoluene. LC 50 Median concentration.