Tetrahydrofuran/CAS: 109-99-9
Kev Piav Qhia Luv:
Tetrahydrofuran/CAS:109-99-9
Lub Npe Khoom:Tetrahydrofuran
CAS: 109-99-9
MF:C4H8O
MW:72.11
QAUV:
cov lus qhia tshwj xeeb
| Khoom | Cov Lus Qhia Tshwj Xeeb |
| Qhov Kub Yaj | -108°C |
| Kub Kub | 66 °C |
| Qhov Ceev | 0.887 g/mL ntawm 20 °C |
| Qhov Ceev ntawm Cov Pa | 2.5 (piv rau huab cua) |
| Siab ntawm cov pa dej | <0.01 hli Hg (25 °C) |
| Refractive Index | n20/D 1.465 |
| Lub Teeb Ci | >230 °F |
| Tus nqi pH | 7-8 (200g/l, H2O, 20℃) |
| Tsw tsw phem | Ether, ntes tau ntawm 2 txog 50ppm |
| Kev Txwv Tsis Pub Muaj Phom Loj | 1.5-12.4% (V) |
| Chaw Khov | -108℃ |
Tetrahydrofuran, luv ua THF, yog ib qho heterocyclic organic compound. Koom nrog pawg ether, nws yog cov khoom hydrogenated tag nrho ntawm cov aromatic compound furan. Tetrahydrofuran yog ib qho ntawm cov polar ethers muaj zog tshaj plaws, siv ua cov tshuaj polarity nruab nrab hauv cov tshuaj tiv thaiv thiab rho tawm. Nws yog cov kua tsis muaj xim thiab volatile ntawm chav tsev kub, nrog rau cov ntxhiab zoo ib yam li ether. Yaj hauv feem ntau cov organic solvents xws li dej, ethanol, ether, acetone, thiab benzene, nws hu ua "universal solvent". Ntawm chav tsev kub, nws yog ib feem sib xyaw nrog dej, thiab qee tus neeg ua lag luam tsis raug cai siv qhov no los ua kom tau txiaj ntsig loj los ntawm kev sib xyaw tetrahydrofuran reagent nrog dej. Vim yog qhov nyiam ntawm THF los tsim peroxides thaum lub sijhawm khaws cia, cov khoom lag luam feem ntau ntxiv antioxidant BHT. Cov dej noo ≤ 0.2%. Nws muaj cov yam ntxwv ntawm kev lom tsawg, qhov kub qis, thiab fluidity zoo.
Kev Siv
1. Cov tshuaj tiv thaiv ntawm cov khoom siv raw tetrahydrofuran nws tus kheej tuaj yeem yog polycondensation (los ntawm cation pib lub nplhaib-qhib polymerization) rau hauv polytetramethylene ether glycol (PTMEG), tseem hu ua tetrahydrofuran homopolymerization ether. PTMEG thiab toluene diisocyanate (TDI) ua los ntawm kev puas tsuaj-resistant, roj-resistant, qis-kub kev ua tau zoo, siab zog ntawm cov roj hmab tshwj xeeb; thiab nrog dimethyl terephthalate thiab 1,4-butanediol ua los ntawm thaiv polyether polyester elastomer cov ntaub ntawv. Lub molecular hnyav ntawm PTT yog 2,000. Qhov hnyav molecular ntawm 2000 PTMEG thiab p-methylene bis (4-phenyl) diisocyanate (MDI) ua los ntawm polyurethane elastic fibers (spandex, SPANDEX fiber), cov roj hmab tshwj xeeb thiab qee cov khoom siv tshwj xeeb. THF yog qhov tseem ceeb tshaj plaws siv rau kev tsim cov PTMEG, raws li cov ntaub ntawv txheeb cais, ntau dua 80% ntawm lub ntiaj teb THF siv rau kev tsim cov PTMEG, thiab PTMEG, thiab PTMEG, thiab PTMEG, thiab PTMEG, thiab PTMEG, thiab PTMEG, thiab PTMEG, thiab PTMEG. PTMEG, thiab PTMEG feem ntau yog siv rau kev tsim cov elastic spandex fibers.
2. kev ua tau zoo heev tetrahydrofuran yog cov tshuaj yaj zoo siv feem ntau, tshwj xeeb tshaj yog rau kev yaj PVC, polyvinylidene chloride thiab butylaniline, dav siv ua cov tshuaj yaj rau cov txheej txheej saum npoo, cov tshuaj tiv thaiv xeb, cov luam ntawv inks, cov kab xev thiab cov txheej txheej zaj duab xis rau electro-Chemicalbook Aluminium Plating Liquid tuaj yeem tswj tau qhov tuab ntawm txhuas thiab Brightness. Cov ntaub nplaum sib nqus txheej, PVC txheej saum npoo, ntxuav PVC reactor, tshem tawm PVC zaj duab xis, cellophane txheej, yas luam ntawv ink, thermoplastic polyurethane txheej, cov tshuaj yaj rau cov nplaum, dav siv hauv cov txheej txheej saum npoo, cov tshuaj tiv thaiv, inks, extractants thiab cov neeg sawv cev kho saum npoo rau cov tawv nqaij cuav.
3. Siv ua cov khoom siv raw rau cov organic synthesis xws li cov tshuaj siv hauv kev tsim cov tetrahydrothiophene, 1.4 - dichloroethane, 2.3 Nws yog siv los tsim cov tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, valerolactone, butyrolactone thiab pyrrolidone. Hauv kev lag luam tshuaj, nws yog siv rau kev tsim cov hnoos, Rifamycin, progesterone thiab qee cov tshuaj hormones. Tetrahydrothiophenol yog tsim los ntawm kev kho hydrogen sulfide, uas tuaj yeem siv ua cov ntxhiab tsw hauv roj roj (cov khoom ntxiv txheeb xyuas), thiab tseem yog cov kuab tshuaj tseem ceeb hauv kev lag luam tshuaj.
4. Lwm Yam Siv Chromatographic solvent (gel permeation chromatography), siv rau cov roj av tsw qab, cov kuab tshuaj rau acetylene extraction, thiab cov teeb stabilizers rau cov ntaub ntawv polymer. Nrog rau kev siv dav dav ntawm tetrahydrofuran, tshwj xeeb tshaj yog kev loj hlob sai ntawm Tuam Tshoj txoj kev lag luam spandex hauv xyoo tas los no, ua rau Tuam Tshoj qhov kev thov rau PTMEG nce ntxiv, thiab qhov kev thov rau tetrahydrofuran kuj yog qhov sib txawv loj hlob sai.
Ntim thiab Xa Khoom
180KG / Nruas los yog raws li cov neeg siv khoom xav tau.
Yuav xa tau los ntawm dej hiav txwv thiab cua
Khaws cia thiab khaws cia
Lub neej txee: 24 lub hlis txij li hnub tsim khoom hauv cov ntim khoom tsis tau qhib khaws cia rau hauv qhov chaw txias thiab qhuav kom tsis txhob raug tshav ntuj ncaj qha, dej.
Lub tsev rau khoom muaj cua nkag, ziab kom qhuav kub tsawg, Sib cais ntawm cov tshuaj oxidants, cov kua qaub.
