Tetrahydrofuran (THF): Mutsipa Unochinjika weMaitiro Emakemikari Akanyatsojeka
Kuongorora Kwakadzama Kwezvinhu zveFizikokemikari
Magadzirirwo Akasiyana Emamorekuru
Maumbirwo eTHF ane denderedzwa re ether rine atomu yeokisijeni, zvichigadzira zvinhu zvinotevera zvakakosha:
Polar Solvency: Nguva ye dipole ye 2.75 D inobvumira hydrogen kubatana nema polar molecules uku ichigadzirisa nonpolar compounds kuburikidza ne induced dipole interactions, zvichiita kuti ive yakakodzera kune akasiyana reaction systems.
Kuchinja kweRing: Ring ye ether inovhurwa ne acid-catalyzed ring, zvichiita kuti zvive nyore kuita senge alkylation uye polymerization. Kuchinja uku kwakakosha pakugadzira ma polymer akadai se polytetramethylene ether glycol (PTMEG).
Hunhu hwemuviri
Kugadzikana kweThermal: Ikafashaira pa66°C uye ichitonhora pa -108.5°C, THF inoramba iri mvura mumhando dzakasiyana dzetembiricha, yakakodzera kushandiswa patembiricha yakaderera uye nekukurumidza kupwanya.
Zvimiro zveKutakura: Kusviba kwakaderera (0.55 mPa·s) uye kusimba kwepamusoro (26.4 mN/m) zvinowedzera kugona kwayo kunyorova, zvakakosha pakuchenesa uye kushandisa machira.
Chenjedzo Yekuchengetedza: Inobvira moto zvakanyanya (flash point -17.2°C) uye inogadzira musanganiswa unoputika nemhepo (1.8–12.4% vol), inoda matanho akasimba ekudzivirira moto.
Zvishandiso Zvikuru Mumaindasitiri
Kugadzirwa kwePolymer neResin
Kugadzirwa kwePolyurethane (PU):
Kugadzirwa kwePTMEG: THF ndiyo inonyanya kushandiswa kugadzira polytetramethylene ether glycol (PTMEG), chikamu chakakosha che spandex fibers uye thermoplastic polyurethanes (TPUs). Inopfuura 90% yeTHF yepasi rose inoshandiswa muchikamu ichi, tani yega yega yespandex ichida ~0.8 matani eTHF.
Zvinonamira zvePU: Kana zvasanganiswa neDMF, THF inogadzira zvinonamira zvakasimba uye zvakasimba zveshangu nemukati memotokari, zvichipa 35% yezvinhu zvakasimba uye 40% zvinokurumidza kuoma kupfuura masisitimu eDMF chaiwo.
Epoxy uye Synthetic Resins:
Semusanganiswa we epoxy, THF inovandudza kusawirirana uye inoderedza kusviba, zvichiita kuti zvive nyore kushandisa machira emagetsi nemumhepo.
Kemistri yeOrganic uye Specialty
Mhinduro dzaGrignard:
THF inosimbisa organometallic intermediates (semuenzaniso, RMgX) kuburikidza nekubatana nema magnesium ions, zvichiwedzera mhedzisiro ne15–20% zvichienzaniswa ne diethyl ether. Muenzaniso: Mukugadzirwa kwe ibuprofen, matanho eGrignard akavakirwa paTHF anosvika ≥99.5% kuchena ne ≤0.3% byproducts.
Maelectrolyte eLithium Battery:
THF inowedzera kufambiswa kwemagetsi e lithium hexafluorophosphate (LiPF₆)-based electrolytes (≥10 mS/cm), zvichivandudza hupenyu hwe cycle kusvika kanopfuura 1,000 (kuchengetwa kwesimba ≥85%) mumabhatiri e lithium metal.
Minda yeTekinoroji Yepamusoro uye Yakakosha
Kuchenesa Semiconductor: THF inobvisa ma residues e photoresist mukugadzira microelectronics, zvichiita kuti iwane kusvibiswa kwesimbi ion ≤10 ppb kune sub-14 nm processes.
Kugadzira Crystallization yeMishonga: Inoshandiswa mukugadzirazve mishonga inorwisa mabhakitiriya nemasteroid, masisitimu emvura eTHF anoburitsa makristaro akafanana (50–200 μm) ane kuchena kwe ≥99.9%.
Kubviswa Kwezvigadzirwa Zvechisikigo: Inonyungudutsa zvinhu zvinopisa (semuenzaniso, CBD, paclitaxel) zvine kuchena kwakanyanya ne25% kupfuura zvinonyungudutsa zvisiri zvepolar, uku ichideredza kusvibiswa kwekupisa kuburikidza nekugadzirwa kwekupisa kwakaderera.
Magadzirirwo
| Zita rechigadzirwa | Propionic Acid | |||||||||
| Fomura yeMakemikari | C3H6O2 | |||||||||
| Kurema kweMorekuru | 74.08 g/mol | |||||||||
| Chitarisiko | Mvura inoonekera isina ruvara | |||||||||
| Nzvimbo Yokunyunguduka | -20.8℃ | |||||||||
| Nzvimbo Yokubikira | 141.1℃ | |||||||||
| Kuwanda kwevanhu | 0.993 g/cm³ | |||||||||
| Nhamba yeCAS | 79 - 09 - 4 | |||||||||
| Kodhi yeHS | 29155000 | |||||||||
| EINECS Kwete | 201 - 176 - 3 | |||||||||
| Kushandiswa | Inoshandiswa mumapurasitiki, mishonga, chikafu, zvinonyungudutsa uye zvinonhuhwirira | |||||||||
Pepa Rekudzora Hunhu
| Zita rechigadzirwa | Propionic Acid | ||||||
| CHINHU | Kukosha Kwakajairika (%) | Kukosha kwekuyedza (%) | |||||
| Zviri mukati mePropionic Acid, w/%≥ | 99.5 | 99.9 | |||||
| Kuwanda (20/20 ℃) | 0.993-0.997 | 0.996 | |||||
| Kufashaira Kwemvura/℃ | 138.5-142.5 | 139.4-141.1 | |||||
| Zvisaririra zvemvura, w/%≤ | 0.01 | 0.006 | |||||
| Mvura, w/%≤ | 0.15 | 0.02 | |||||
| Aldehyde, w/%≤ | ≤0.05 | 0.04 | |||||
| nyore oxidization, w/%≤ | ≤0.05 | 0.01 | |||||
| Pb mg/kg≤ | 2.0 | ≤2.0 | |||||
| Sezvo mg/kg≤ | 3.0 | ≤3.0 | |||||
| Mhedziso | Tevedzera zvinodiwa zveGB 1886.210-2016 | ||||||
Kufunga Nezvekuchengetedza uye Kugadziriswa Kwemaindasitiri
Njodzi dzehutano nedzezvakatipoteredza
Kufema zvine chepfu: Kufema zvine mwero wakakwira (>500 ppm) kunogona kukonzera kushushikana kweCNS; kugara kwenguva refu kunogona kukanganisa mashandiro echiropa/itsvo. Inoda dziviriro yekufema (APF≥10) uye magirovhosi asingapindi makemikari.
Kukanganiswa Nezvakatipoteredza: Inogona kuora muvhu (hafu yehupenyu hwemvura ≤mazuva mashanu) asi ine chepfu kuzvisikwa zvemumvura (LC50 hove = 110 mg/L). Mvura yakasviba inofanira kurapwa zvakanyanya (COD≤50 mg/L) isati yaburitswa.
Mhinduro dzeMutemo nedzehunyanzvi
Magiredhi Ekuchena:
Maindasitiri (≥99%): Pakugadzirwa kwezvinhu zvakasiyana-siyana, zvichibvumira ≤0.5% mvura/aldehydes.
Zvemagetsi (≥99.9%): Maion esimbi ≤1 ppb, anoenderana neSEMI C8 kuti ashandiswe semiconductor.
Mishonga (≥99.5%): Inotenderwa neFDA, aldehydes ≤10 ppm yekugadzira mishonga.
Kutevedzera Mutemo Wepasi Rose:
EU REACH: Kusasvika kwezvikafu zvinosangana nevanhu (kutamira kune dzimwe nzvimbo ≤0.05 mg/kg).
US OSHA: PEL-TWA 200 ppm (590 mg/m³), inoda kutariswa kwemhepo panzvimbo yebasa.
Sei Uchifanira Kusarudza THF Yedu?
Kuchena Kusingachinji: Maitiro epamusoro ekugadzira katatu anopa THF yemhando yepamusoro pa99.99% kuchena, ine hunyoro hwe ≤10 ppm uye ≤1 ppm aldehydes, zvichiita kuti pave nekuenderana kwechinhu chimwe nechimwe (kuchinja kwe ≤±0.02%).
Mhinduro Dzakagadzirirwa: Mafomura akagadzirirwa huwandu hwemvura (50–1000 ppm), huwandu hweperoxide (≤10 ppm), uye pH (5.0–7.0), zvakaita se low-peroxide THF yekugadzira mishonga inonzwisisika.
Zvinhu Zvinotungamirirwa Nekuchengetedza: Kuchengetera zvinhu zvakaputirwa nenitrogen uye masisitimu ekufambisa asingaputike anoita kuti zvinhu zvibatike zvakachengeteka kubva pakugadzirwa kusvika pakuendesa.
Kugona Kudzora: Kutevedzera mitemo yeSEMI, ACS, uye FDA pasi rose, zvichitsigirwa neMSDS inogadziriswa kuti ipinde mumusika zvakanaka.
Kubatana kweChemical Excellence
Kuenzana kwakasiyana kweTHF kwekugona kushanda, kuita zvinhu zvitsva, uye kuchinjika kwemaitiro kunoisa izvi pachigadziko chemakemikari emazuva ano. Kuzvipira kwedu kuzvigadzirwa zvakachena, hunyanzvi hwekugadzira, uye kutevedzera mitemo kunoita kuti vatengi vari mumapurasitiki, zvemagetsi, uye mishonga vakwanise kutungamira kubudirira kwavo nenzira ine mutoro. Sarudza THF yedu kuti ivhure kunyatsojeka, kushanda, uye kugara kwenguva refu mukushandiswa kwese.