I-Tetrahydrofuran (THF): Umqolo Oguquguqukayo Weenkqubo Zekhemikhali Ezichanekileyo
Uhlalutyo oluNzulu lweePropati zeFizikokhemikhali
Uyilo lweeMolekyuli oluKhethekileyo
Ulwakhiwo lwe-THF luqulathe indandatho ye-ether ejikelezayo ene-athomu yeoksijini, nto leyo edala ezi mpawu zilandelayo ziphambili:
I-Polar Solvency: I-dipole moment ye-2.75 D ivumela i-hydrogen bonding kunye nee-polar molecules ngelixa ixazulula ii-nonpolar compounds ngokusebenzisa i-induced dipole interactions, nto leyo eyenza ukuba ilungele iinkqubo ezahlukeneyo zokusabela.
I-Ring Reactivity: I-ether ring ivuleka nge-acid-catalyzed ring-opening, nto leyo enceda ekuphenduleni okufana ne-alkylation kunye ne-polymerization. Le reactivity ibalulekile ekuhlanganiseni iipolymers ezifana ne-polytetramethylene ether glycol (PTMEG).
Iimpawu zomzimba
Uzinzo lobushushu: Ibila kwi-66°C ize iqande kwi--108.5°C, i-THF ihlala ilulwelo kubushushu obubanzi, ifanelekile kwiimpendulo zobushushu obuphantsi kunye neenkqubo zokufuma ngokukhawuleza.
Iipropati zoThutho: Ubuninzi obuphantsi (0.55 mPa·s) kunye noxinzelelo oluphezulu lomphezulu (26.4 mN/m) kuphucula amandla ayo okumanzisa, nto leyo ebalulekileyo ekucoceni nasekufakeni i-coating.
Inqaku loKhuseleko: Ivutha kakhulu (indawo yokukhanya -17.2°C) kwaye yenza imixube eqhumayo nomoya (1.8–12.4% vol), ifuna amanyathelo angqongqo okuthintela umlilo.
Izicelo eziphambili kumashishini onke
Imveliso yePolymer kunye neResin
Ukwenziwa kwePolyurethane (PU):
Imveliso yePTMEG: I-THF yeyona nto iphambili yokwenza i-polytetramethylene ether glycol (PTMEG), icandelo elithambileyo eliphambili kwi-spandex fibers kunye ne-thermoplastic polyurethanes (TPUs). Ngaphezulu kwe-90% ye-THF yehlabathi isetyenziswa kweli candelo, apho itoni nganye ye-spandex ifuna iitoni ezingama-0.8 ze-THF.
Izincamathelisi zePU: Zixutywe neDMF, iTHF yenza izincamathelisi ezoma ngokukhawuleza neziqinileyo kwizihlangu nakwiimoto, zibonelela ngomxholo we-35% yezinto eziqinileyo kunye nokomisa ngokukhawuleza nge-40% kuneenkqubo zeDMF ezicocekileyo.
IiResins ze-Epoxy kunye nezeSintetiki:
Njenge-solvent edibeneyo kwi-epoxy formulations, i-THF iphucula ukungafani kwaye inciphisa i-viscosity, ivumela ukusetyenziswa ngokuchanekileyo kwe-coating kwi-elektroniki nakwi-aerospace.
I-Chemistry ye-Organic kunye neKhethekileyo
Iimpendulo zikaGrignard:
I-THF izinzisa ii-organometallic intermediates (umz., i-RMgX) ngokusebenzisa ulungelelwaniso kunye nee-magnesium ions, inyusa isivuno sempendulo nge-15–20% xa kuthelekiswa ne-diethyl ether. Umzekelo: Kwi-ibuprofen synthesis, amanyathelo e-Grignard asekelwe kwi-THF afikelela kwi-≥99.5% yobumsulwa kunye neemveliso ezingaphantsi kwe-≤0.3%.
Ii-Electrolyte zeLithium Battery:
I-THF iphucula ukuhanjiswa kwee-electrolytes ezisekelwe kwi-lithium hexafluorophosphate (LiPF₆) (≥10 mS/cm), iphucula ubomi bomjikelo ukuya kumaxesha angaphezu kwe-1,000 (ukugcinwa komthamo ≥85%) kwiibhetri ze-lithium metal.
Iinkalo zobuChwepheshe obuPhezulu kunye nezoKhethekileyo
Ukucocwa kweSemiconductor: I-THF isusa iintsalela ze-photoresist kwimveliso ye-microelectronics, ifikelela kungcoliseko lwe-ion yesinyithi ≤10 ppb kwiinkqubo ze-sub-14 nm.
I-Pharmaceutical Crystallization: Isetyenziswa ekuphindeni i-antibiotics kunye ne-steroids, iinkqubo zamanzi ze-THF zivelisa iikristale ezifanayo (50–200 μm) ezinobumsulwa obuyi-≥99.9%.
Ukutsalwa kweMveliso yendalo: Ngokuzikhethela inyibilikisa iikhompawundi ze-lipophilic (umz., i-CBD, i-paclitaxel) ngobunyulu obuphezulu ngama-25% kunezinyibilikisi ezingezizo ze-polar, ngelixa inciphisa ukubola kobushushu ngokucubungula ubushushu obuphantsi.
Iinkcukacha
| Igama lemveliso | I-Propionic Acid | |||||||||
| Ifomula yeKhemikhali | C3H6O2 | |||||||||
| Ubunzima beMolekyuli | 74.08 g/mol | |||||||||
| Inkangeleko | Ulwelo olungabonakaliyo olungenambala | |||||||||
| Indawo yokunyibilika | -20.8℃ | |||||||||
| Indawo yokubilisa | 141.1℃ | |||||||||
| Uxinano | 0.993 g/cm³ | |||||||||
| INOMBOLO YE-CAS | 79 - 09 - 4 | |||||||||
| Ikhowudi ye-HS | 29155000 | |||||||||
| Hayi i-EINECS | 201 - 176 - 3 | |||||||||
| Isicelo | Isetyenziswa kwiiplastiki, kwiikhemesti, ekutyeni, kwizinyibilikisi nakwiivumba | |||||||||
Iphepha Lolawulo Lomgangatho
| Igama lemveliso | I-Propionic Acid | ||||||
| INTO | IXABISO ELIQHELEKILEYO(%) | IXABISO LOVAVANYO(%) | |||||
| Umxholo we-Propionic Acid, w/%≥ | 99.5 | 99.9 | |||||
| Uxinano （20/20 ℃） | 0.993-0.997 | 0.996 | |||||
| Uluhlu lokuBilisa/℃ | 138.5-142.5 | 139.4-141.1 | |||||
| Intsalela yomphunga, w/% ≤ | 0.01 | 0.006 | |||||
| Amanzi, w/%≤ | 0.15 | 0.02 | |||||
| I-Aldehyde, w/%≤ | ≤0.05 | 0.04 | |||||
| i-oxidization elula, w/%≤ | ≤0.05 | 0.01 | |||||
| I-Pb mg/kg≤ | 2.0 | ≤2.0 | |||||
| Njengoko mg/kg≤ | 3.0 | ≤3.0 | |||||
| Isiphelo | Thobela imigangatho ye-GB 1886.210-2016 | ||||||
Izinto Eziqwalaselwayo Ngokhuseleko kunye Nohlengahlengiso Lweshishini
Iingozi zeMpilo kunye nokusingqongileyo
Ubuthi: Ukuphefumla ubuninzi obuphezulu (>500 ppm) kunokubangela ukudakumba kwe-CNS; ukuchatshazelwa ixesha elide kunokuchaphazela ukusebenza kwesibindi/izintso. Kufuna ukhuseleko lokuphefumla (APF≥10) kunye neeglavu ezimelana neekhemikhali.
Impembelelo kwiNdalo: Ibola emhlabeni (isiqingatha sobomi ≤iintsuku ezi-5) kodwa inetyhefu kwizilwanyana zasemanzini (iintlanzi ze-LC50=110 mg/L). Amanzi amdaka kufuneka anyangwe ngendlela ephucukileyo (COD≤50 mg/L) ngaphambi kokuba akhutshwe.
Iimpendulo zoLawulo nezoBugcisa
Amanqanaba okuHlanzeka:
Kwimizi-mveliso (≥99%): Kwi-synthesis ngokubanzi, kuvumela amanzi/i-aldehydes eziyi-≤0.5%.
I-elektroniki (≥99.9%): Ii-ion zesinyithi ≤1 ppb, zihambelana ne-SEMI C8 ezisetyenziselwa ukusetyenziswa kwe-semiconductor.
Amayeza (≥99.5%): I-aldehydes evunyiweyo yi-FDA, ≤10 ppm yokwenziwa kwamayeza.
Ukuthobela imithetho kwihlabathi liphela:
UKUFIKELELA KWE-EU: Kuthintelwe kwizinto zokudibanisa ukutya (ukufuduka ≤0.05 mg/kg).
I-US OSHA: PEL-TWA 200 ppm (590 mg/m³), efuna ukubekwa esweni komoya emsebenzini.
Kutheni Ukhetha i-THF Yethu?
Ubunyulu obungagungqiyo: Iinkqubo eziphambili ze-triple-distillation zivelisa i-THF ye-elektroniki kwi-99.99% yobumsulwa, kunye nokufuma kwe-≤10 ppm kunye ne-≤1 ppm aldehydes, okuqinisekisa ukuhambelana kwe-batch-to-batch (utshintsho ≤±0.02%).
Izisombululo ezenziwe ngokwezifiso: Iifomyula ezilungiselelwe umxholo wamanzi (50–1000 ppm), amanqanaba eperoxide (≤10 ppm), kunye ne-pH (5.0–7.0), ezifana ne-low-peroxide THF kwi-sensitive pharmacological syntheses.
Izinto eziqhutywa lukhuseleko: Indawo yokugcina ene-nitrogen kunye neenkqubo zothutho ezingenakuqhuma ziqinisekisa ukuphathwa ngokukhuselekileyo ukusuka kwimveliso ukuya ekuhanjisweni.
Ubuchule bokulawula: Ukuthobela imigangatho ye-SEMI, ACS, kunye ne-FDA kwihlabathi liphela, kuxhaswa yi-MSDS enokwenziwa ngokwezifiso ukuze kungeneke kwimarike ngaphandle kokuphazamiseka.
Ukusebenzisana kwiKhemikhali egqwesileyo
Ibhalansi ekhethekileyo ye-THF yokusombulula iingxaki, ukusabela, kunye nokuguquguquka kwenkqubo ikubeka njengesiseko kwikhemistri yanamhlanje. Ukuzinikela kwethu kwiimveliso ezicocekileyo kakhulu, ubugcisa obutsha, kunye nokuthotyelwa kwemithetho kunika amandla abathengi kwiplastiki, kwi-elektroniki, nakwimveliso zamayeza ukuqhuba impumelelo ngokuthembekileyo. Khetha i-THF yethu ukuvula ukuchaneka, ukusebenza, kunye nokuzinza kuyo yonke inkqubo.