I-Tetrahydrofuran
Igama lesiNgisi elithi: THF; i-oxolane; i-Butane, i-alpha, i-delta-oxide; i-Cyclotetramethylene oxide; i-Diethylene oxide; i-Furan, i-tetrahydro-; i-Furanidine; 1, 2, 3, 4 – i-tetrahydro – amahora angu-9 – i-fluoren – 9 – eyodwa
Inombolo ye-CAS: 109-99-9
Inombolo ye-EINECS: 203-726-8
Ifomula yama-molecule: C4H8O
Isisindo sama-molecule: 184.2338
I-InChI: InChI = 1 / C13H12O/c14-13-11-7-13-11-7-9 (11) 10-6-2-10-6-2 (10) 13 / h1, 3, 5, 7 H, 2,4,6,8 H2
Isakhiwo sama-molecule: Tetrahydrofuran 109-99-9
Ubuningi: 1.17 g/cm3
Indawo yokuncibilika: 108.4 ℃
Iphuzu lokubila: 343.2°C ku-760 mmHg
I-Flash: 150.7 ° C
Ukuncibilika kwamanzi: Kuxubene
Ukucindezela komusi: 7.15E-05mmHg ku-25°C
Izakhiwo zomzimba nezamakhemikhali:
Uketshezi olusobala olungenambala, olunephunga le-ether.
Iphuzu lokubila elingu-67 ℃
Iphuzu lokuqandisa – 108 ℃
Ubuningi obuhlobene 0.985
Inkomba yokubuyisa engu-1.4050
Iphuzu lokuphazima – 17 ℃
Ukuncibilika kuxutshwa namanzi, utshwala, i-ketone, i-benzene, i-ester, i-ether, ne-hydrocarbon.
Ukusetshenziswa Komkhiqizo:
Kusetshenziswa njenge-solvent kanye nezinto zokusetshenziswa zokwenziwa kwezinto eziphilayo

I-Tetrahydrofuran, efushanisiwe nge-THF, iyinhlanganisela yezinto eziphilayo ezi-heterocyclic. Iyingxenye yeqembu le-ether futhi ingumkhiqizo ophelele we-hydrogenation we-furan ehlanganisiwe ye-aromatic. I-Tetrahydrofuran ingenye ye-ether enamandla kakhulu ye-polar. Isetshenziswa njenge-solvent ephakathi nendawo ekuphenduleni nasekukhipheni kwamakhemikhali. Iwuketshezi oluguquguqukayo olungenambala ekushiseni kwegumbi futhi inephunga elifanayo ne-diethyl ether. Incibilika emanzini, i-ethanol, i-ether, i-acetone, i-Chemicalbook benzene kanye nezinye izinto eziphilayo ezincibilikayo, ezaziwa ngokuthi “i-solvent yendawo yonke”. Ingaxutshwa kancane namanzi ekushiseni kwegumbi, yingakho abanye abathengisi be-reagent abangemthetho benza inzuzo enkulu ngokuxuba i-reagent ye-tetrahydrofuran namanzi. Njengoba i-THF ivame ukwakha ama-peroxide agcinwe, i-antioxidant BHT ngokuvamile ingezwa emikhiqizweni yezimboni. Okuqukethwe kwamanzi kungaphansi kuka-0.2%. Inezici zobuthi obuphansi, izinga lokubila eliphansi kanye nokugeleza okuhle.
Njengamanje, abakhiqizi abakhulu basekhaya be-tetrahydrofuran bahlanganisa i-BASF China, i-Dalian Yizheng (DCJ), i-Shanxi Sanwei, i-Sinochem International, kanye ne-Petrochina Qianguo Refinery, njll., kanti ezinye izitshalo ze-PBT nazo zikhiqiza ingxenye yemikhiqizo engezansi. Izinkomba zokuthengisa ze-LyondellBasell Industries e-United States naseYurophu yilezi: ubumsulwa 99.90% Chemicalbook, i-chroma (APHA) 10, umswakama 0.03%, i-THF hydroperoxide 0.005%, ukungcola okuphelele 0.05%, kanye ne-oxidation inhibitor 0.025% ~ 0.035%. Embonini ye-polyurethane, ukusetshenziswa okubaluleke kakhulu njengezinto ze-monomer ze-polytetrahydrofuranediol (PTMEG), okungenye yezindlela eziyinhloko zokusetshenziswa kwe-THF.

Ukusetshenziswa okuyinhloko:
Inhloso eyinhloko
1. Izinto zokusetshenziswa zokwenziwa kwe-polyurethane fiber tetrahydrofuran zingaba yi-polycondensation (i-cationic initiated ring-opening repolysis) ibe yi-polytetramethylene ether diol (PTMEG), eyaziwa nangokuthi i-tetrahydrofuran homopolyether. I-PTMEG kanye ne-TOLuene diisocyanate (TDI) zenziwe irabha ekhethekile enokumelana okuhle nokuguguleka, ukumelana namafutha, ukusebenza kahle kwezinga lokushisa eliphansi kanye namandla aphezulu. I-block polyester elastomer yalungiswa nge-dimethyl terephthalate kanye ne-1, 4-butanediol. Imicu ye-polyurethane elastic (SSPANDEX, SPANEX), irabha ekhethekile kanye nezinye izembozo zenhloso ekhethekile zenziwe nge-PTMEG ka-2000 kanye ne-p-methylene bis (4-phenyl) diisocyanate (MDI). Ukusetshenziswa okubaluleke kakhulu kwe-THF ukukhiqiza i-PTMEG. Ngokwezibalo ezilinganiselwe, ngaphezu kwama-80% e-THF emhlabeni asetshenziselwa ukukhiqiza i-PTMEG, kuyilapho i-PTMEG isetshenziswa kakhulu ukukhiqiza i-elastic spandex fiber.
2. I-Tetrahydrofuran iyi-solvent enhle evame ukusetshenziswa, efanelekile kakhulu ekuncibilikiseni i-PVC, i-polyvinylidene chloride kanye ne-butaniline. Isetshenziswa kabanzi njenge-solvent yokugqoka ubuso, ukugqoka okulwa nokugqwala, uyinki wokunyathelisa, i-magnetic tape kanye nokugqoka ifilimu. Ukugqoka kwe-magnetic tape, ukugqoka ubuso be-PVC, UKUHLANZA i-PVC reactor, ukususwa kwefilimu ye-PVC, ukugqoka kwe-cellophane, uyinki wokunyathelisa wepulasitiki, ukugqoka kwe-thermoplastic polyurethane, ukugqoka okunamathelayo, okusetshenziswa kabanzi ekugqokeni ubuso, ukugqoka okuvikelayo, uyinki, ama-extractants kanye nama-ejenti okuqeda ubuso besikhumba sokwenziwa.
3. Isetshenziswa njengezinto zokusetshenziswa zokwenziwa kwezinto eziphilayo njengemithi yokukhiqiza i-tetrahydrothiophene, i-1.4-dichloroethane, i-2.3-dichlorotetrahydrofuran, i-pentolactone, i-butyllactone kanye ne-pyrrolidone, njll. Embonini yemithi, isetshenziselwa ukwenziwa kwe-kepidine, i-rifamycin, i-progesterone kanye neminye imithi yama-hormone. I-Tetrahydrothiophenol, ekhiqizwa ngokwelashwa kwe-hydrogen sulfide, ingasetshenziswa njenge-iphunga (i-identification additive) kugesi kaphethiloli futhi iyisisombululo esiyinhloko embonini yemithi.
4. Okunye ukusetshenziswa kwe-chromatographic solvents (i-gel permeation chromatography), esetshenziselwa ukunambitheka kwegesi yemvelo, i-acetylene extraction solvent, izinto ze-polymer, njenge-light stabilizer. Ngokusetshenziswa kabanzi kwe-tetrahydrofuran, ikakhulukazi ukukhula okusheshayo kwemboni ye-spandex eShayina eminyakeni yamuva nje, isidingo se-PTMEG eShayina sikhula usuku nosuku, futhi isidingo se-tetrahydrofuran sibonisa nomkhuba wokukhula okusheshayo.