Tetrahydrofuran
Lus Askiv lub npe: THF; oxolane; Butane, alpha, delta-oxide; Cyclotetramethylene oxide; Diethylene oxide; Furan, tetrahydro-; Furanidine; 1, 2, 3, 4 – tetrahydro – 9 h – fluoren – 9 – ib
CAS no.: 109-99-9
EINECS tus lej: 203-726-8
Cov mis mos molecular: C4H8O
Qhov hnyav molecular: 184.2338
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
Cov qauv molecular: Tetrahydrofuran 109-99-9
Qhov Ceev: 1.17 g/cm3
Melting point: 108.4 ℃
Kub taw tes: 343.2°C ntawm 760 mmHg
Flash: 150.7 ° C
Kev yaj dej: Sib xyaw ua ke
Lub zog nqus pa: 7.15E-05mmHg ntawm 25 ° C
Cov khoom siv lub cev thiab tshuaj lom neeg:
Xim tsis muaj xim pob tshab, muaj ntxhiab tsw ntawm ether.
Lub ntsiab lus kub ntawm 67 ℃
Qhov chaw khov - 108 ℃
Qhov ceev sib piv 0.985
Lub refractive index ntawm 1.4050
Qhov kub hnyiab - 17 ℃
Kev yaj yog miscible nrog dej, cawv, ketone, benzene, ester, ether, hydrocarbon.
Kev Siv Khoom:
Siv ua cov kuab tshuaj thiab cov khoom siv raw rau cov organic synthesis

Tetrahydrofuran, luv luv THF, yog ib qho heterocyclic organic compound. Nws yog ib feem ntawm pawg ether thiab yog cov khoom hydrogenation tiav ntawm cov aromatic compound furan. Tetrahydrofuran yog ib qho ntawm cov polar ether muaj zog tshaj plaws. Nws yog siv ua cov tshuaj nruab nrab polar hauv kev tshuaj lom neeg thiab kev rho tawm. Nws yog cov kua tsis muaj xim volatile ntawm chav tsev kub thiab muaj ntxhiab zoo ib yam li diethyl ether. Yaj hauv dej, ethanol, ether, acetone, Chemicalbook benzene thiab lwm yam organic solvents, hu ua "universal solvent". Nws tuaj yeem sib xyaw nrog dej ntawm chav tsev kub, yog vim li cas qee tus neeg muag khoom tsis raug cai ua rau muaj txiaj ntsig loj los ntawm kev sib xyaw tetrahydrofuran reagent nrog dej. Vim tias THF feem ntau tsim cov peroxides hauv kev khaws cia, cov antioxidant BHT feem ntau yog ntxiv rau cov khoom lag luam. Cov dej muaj tsawg dua 0.2%. Nws muaj cov yam ntxwv ntawm kev lom tsawg, qhov kub qis thiab kev ua haujlwm zoo.
Tam sim no, cov chaw tsim khoom loj hauv tsev ntawm tetrahydrofuran suav nrog BASF Tuam Tshoj, Dalian Yizheng (DCJ), Shanxi Sanwei, Sinochem International, thiab Petrochina Qianguo Refinery, thiab lwm yam, thiab qee qhov LWM YAM PBT cog kuj tsim ib feem ntawm cov khoom lag luam. LyondellBasell Industries cov ntsuas muag khoom hauv Tebchaws Meskas thiab Tebchaws Europe yog: kev huv huv 99.90% Chemicalbook, chroma (APHA) 10, dej noo 0.03%, THF hydroperoxide 0.005%, tag nrho cov khoom tsis huv 0.05%, thiab oxidation inhibitor 0.025% ~ 0.035%. Hauv kev lag luam polyurethane, kev siv tseem ceeb tshaj plaws yog ua cov khoom siv monomer rau polytetrahydrofuranediol (PTMEG), uas kuj yog ib qho ntawm cov kev siv tseem ceeb ntawm THF.

Cov kev siv tseem ceeb:
Lub hom phiaj tseem ceeb
1. Cov khoom siv raw ntawm kev tsim cov polyurethane fiber tetrahydrofuran tuaj yeem yog polycondensation (cationic pib lub nplhaib qhib repolymerization) rau hauv polytetramethylene ether diol (PTMEG), tseem hu ua tetrahydrofuran homopolyether. PTMEG thiab TOLuene diisocyanate (TDI) yog ua rau cov roj hmab tshwj xeeb nrog kev tiv thaiv zoo hnav, tiv thaiv roj, kev ua haujlwm kub qis thiab lub zog siab. Block polyether polyester elastomer tau npaj nrog dimethyl terephthalate thiab 1, 4-butanediol. Polyurethane elastic fibers (SPANDEX, SPANDEX), roj hmab tshwj xeeb thiab qee cov txheej txheem tshwj xeeb yog ua los ntawm 2000 PTMEG thiab p-methylene bis (4-phenyl) diisocyanate (MDI). Kev siv tseem ceeb tshaj plaws ntawm THF yog los tsim PTMEG. Raws li cov ntaub ntawv txheeb cais, ntau dua 80% ntawm THF hauv ntiaj teb yog siv los tsim PTMEG, thaum PTMEG feem ntau yog siv los tsim cov elastic spandex fiber.
2. Tetrahydrofuran yog ib qho tshuaj yaj zoo uas siv ntau, tshwj xeeb tshaj yog rau kev yaj PVC, polyvinylidene chloride thiab butaniline. Nws yog dav siv ua tshuaj yaj rau txheej saum npoo, txheej tiv thaiv xeb, luam ntawv number case, daim kab xev sib nqus thiab txheej zaj duab xis. Txheej daim kab xev sib nqus, txheej PVC saum npoo, ntxuav PVC reactor, tshem tawm PVC zaj duab xis, txheej cellophane, luam ntawv number case, txheej thermoplastic polyurethane, tshuaj yaj rau cov nplaum, dav siv rau hauv txheej saum npoo, txheej tiv thaiv, number case, extractants thiab tawv hluavtaws nto tiav cov neeg sawv cev.
3. Siv ua cov khoom siv raw rau cov organic synthesis xws li tshuaj rau kev tsim cov tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, pentolactone, butyllactone thiab pyrrolidone, thiab lwm yam. Hauv kev lag luam tshuaj, nws yog siv rau kev tsim cov kepidine, rifamycin, progesterone thiab qee cov tshuaj hormonal. Tetrahydrothiophenol, uas yog tsim los ntawm kev kho hydrogen sulfide, tuaj yeem siv ua tus neeg sawv cev tsw (kev txheeb xyuas cov khoom ntxiv) hauv roj roj thiab tseem yog cov kuab tshuaj tseem ceeb hauv kev lag luam tshuaj.
4. Lwm yam kev siv cov tshuaj chromatographic (gel permeation chromatography), siv rau cov roj av tsw qab, acetylene extraction solvent, polymer cov ntaub ntawv, xws li lub teeb stabilizer. Nrog rau kev siv dav dav ntawm tetrahydrofuran, tshwj xeeb tshaj yog kev loj hlob sai ntawm kev lag luam spandex hauv Suav teb hauv xyoo tas los no, qhov kev thov rau PTMEG hauv Suav teb nce ntxiv txhua hnub, thiab qhov kev thov rau tetrahydrofuran kuj qhia txog kev loj hlob sai.