I-Tetrahydrofuran (THF) | I-High-Purity Cyclic Ether Solvent

I-Tetrahydrofuran (THF) ngokubuka nje

I-Tetrahydrofuran, evame ukufushaniswa njenge-THF, iwuketshezi oluphilayo olucacile, olungenambala, oluxubene namanzi olukhonjwe yi-CAS No. 109-99-9. Iyi-ether eyi-cyclic enamalungu amahlanu enenani ngenxa ye-solvency yayo eqinile, i-viscosity ephansi, ukuhwamuka okusheshayo kanye nekhono lokuncibilikisa uhla olubanzi lwama-polymers nezinhlanganisela ze-organic.

I-THF isetshenziswa kokubili njenge-solvent yenqubo nanjenge-chemical intermediate. Izicelo ezinkulu zifaka ukukhiqizwa kwe-PTMEG, ukwenziwa kwemithi kanye namakhemikhali amahle, ukusabela kwe-organometallic, okokunamathela, okunamathelayo, usimende we-PVC nokucutshungulwa kwe-polymer.

Sihlinzeka nge-Tetrahydrofuran ngokumelene nobumsulwa okuvunyelwene ngaso, umswakama, ukuqina, ukupakisha kanye nezidingo zemibhalo. Ukucaciswa komkhiqizo wokugcina kuqinisekiswa kwikhotheshini neqoqwana Isitifiketi Sokuhlaziya.

• Igama lomkhiqizo: Tetrahydrofuran

• Isifinyezo: THF

• Inombolo ye-CAS: 109-99-9

• Inombolo ye-EC: 203-726-8

• Ifomula yemolekyuli: C₄H₈O

• Isisindo se-molecule: 72.11 g/mol

• Umndeni wamakhemikhali: I-ether yebhayisikili

• Uhlobo lomkhiqizo: I-solvent ye-organic kanye namakhemikhali aphakathi

• Ukubukeka: Uketshezi olucacile, olungenambala

• Ukuhlonza ezokuthutha: UN 2056, Ikilasi lesi-3, Iqembu Lokupakisha II

Ubunikazi be-THF kanye Nezakhiwo Zomzimba

Amanani alandelayo awulwazi olujwayelekile lwereferensi kunezicaciso zokuthengisa zenkontileka. Sebenzisa Ishidi Ledatha Yezobuchwepheshe elisebenzayo, Ishidi Ledatha Yezokuphepha kanye Nesitifiketi Sokuhlaziya lapho ufaneleka ukuthunyelwa.

Izicaciso ezijwayelekile ze-THF namapharamitha wekhwalithi

Ukucaciswa okuwusizo kwe-THF kufanele kufake okungaphezu kokuhlola kuphela. Imikhawulo efanele incike ekuphenduleni okuhlosiwe, uhlelo lwe-polymer, inqubo yokutakula kanye nezimo zokugcina.

Ukucaciswa kwenkontileka kufanele kuchaze indlela yokuhlaziya kanye nomkhawulo wezinombolo. Imiphumela etholwe ngamanzi ahlukene, i-peroxide noma izindlela zokuhlanzeka ingase ingaqhathanisi ngokuqondile.

Amabanga e-THF nokuthi Ungakhetha Kanjani

I-THF yezimboni ezinzile

I-THF eqinile iqukethe inani elilawulwayo le-inhibitor, ngokuvamile i-BHT, yokunciphisa ukwakheka kwe-peroxide phakathi nokugcinwa nokusabalalisa okuvamile.

Leli banga livame ukukhethelwa:

• I-polymer kanye ne-resin processing

• Izinamathiselo kanye nosimende we-PVC

• I-General organic synthesis

• Coatings kanye nokwenza umsebenzi

• Izinhlelo ze-solvent zezimboni

• Izinqubo lapho i-stabilizer eyamukelekayo

Ububanzi obudingekayo be-BHT kufanele bushiwo ekucacisweni kokuthenga kunokuba kuthathwe egameni lomkhiqizo.

I-THF engenamanzi

I-Anhydrous THF ikhiqizwa noma iphathwe ukuze inikeze okuqukethwe kwamanzi aphansi okulawulwayo. Ngokuvamile kucatshangelwa ukusabela lapho umswakama ungadla ama-reagents, uvale ama-catalyst noma unciphise ukuguqulwa.

Ukusetshenziswa okungenzeka kuhlanganisa:

• Ukusabela kwe-Grignard kanye ne-organometallic

• Ukwenziwa kwemithi ezwela umswakama

• Izinqubo zamakhemikhali ezisekelwe ku-Catalyst

• I-polymerization ekhethekile

• Ucwaningo kanye nezicelo zokuhlaziya

'I-Anhydrous' akusho ngokuzenzakalelayo 'i-inhibitor-free.' Abathengi kufanele bacacise kokubili okuqukethwe kwamanzi amaningi kanye nezinga elivunyelwe lokuzinzisa.

I-THF yamahhala ye-inhibitor

I-THF engena-inhibitor ihloselwe izinhlelo zokusebenza lapho i-BHT noma esinye isizinzisi singaphazamisa ukusabela, i-catalyst, ukuhlaziywa noma umkhiqizo wokugcina.

Ngenxa yokuthi i-THF engazinzile ingakha ama-peroxides ayingozi ngesikhathi sokuchayeka kumoya-mpilo nokukhanya, idinga ukupakishwa okulawulwa ngokucophelela, ukugcinwa, ukuhlolwa nokuphathwa kwempahla. Ukufaneleka kufanele kubuyekezwe ngabasebenzi abaqeqeshiwe bezobuchwepheshe nokuphepha ngaphambi kokuthenga.

I-HPLC kanye ne-Analytical THF

Amabanga okuhlaziya angase ahlanganise izilawuli ezengeziwe zokumunca i-UV, izinsalela zokuhwamuka, amanzi, i-asidi kanye nokungcola komkhondo. Lawa mabanga enzelwe izinhlelo zokusebenza zaselabhorethri noma ezisekelwe kumathuluzi futhi akufanele akhethwe kuphela enanini lokuhlola.

Kungani i-THF Iyindlela Esebenzayo Yokuncibilikisa

I-THF ihlanganisa izakhiwo ezimbalwa ezenza kube usizo ekucubunguleni kwamakhemikhali ne-polymer:

• Incibilikisa izinto eziningi eziphilayo ezitholakala ezindaweni ezishisayo nezingezona ze-polar.

• Ixubene namanzi futhi iyahambisana nezinyibilikisi eziningi eziphilayo.

• I-oxygen yayo ye-ether ingaxhumanisa nama-ion ensimbi nama-organometallic reagents.

• Iphuzu layo lokubilisa eliphansi uma kuqhathaniswa lisekela ukususwa kwe-solvent kanye nokubuyiselwa.

• I-viscosity yayo ephansi isekela ukuxuba, ukupompa kanye nokudluliswa okukhulu.

• Ingancibilikisa noma ithambise ama-polymer akhethiwe, okuhlanganisa i-PVC nezinhlelo ezithile ze-polyurethane noma ze-resin.

Lezi zakhiwo ezifanayo zisho ukuthi ukuhambisana kwe-solvent, ukulawulwa komhwamuko kanye nezimo zokuthola kabusha kufanele kuhlolwe ngenqubo ngayinye.

Tetrahydrofuran Izicelo by Industry

I-THF isebenza njengendawo yokusabela, ukucubungula i-solvent kanye nesakhiwo samakhemikhali kuyo yonke i-polymer, imithi, i-coating kanye nokusebenza okukhethekile kwamakhemikhali.

I-PTMEG kanye nePolymer Production

I-THF iyisiphakeli esibalulekile sokukhiqiza i-polytetramethylene ether glycol, ebizwa nangokuthi i-PTMEG noma i-PTMG. I-PTMEG kamuva isetshenziselwa imicu ye-elastane, i-thermoplastic polyurethane, i-polyurethane elastomers nezinye izinto ezisebenza kahle kakhulu.

Ngezicelo zokukhiqiza i-polymer, abathengi bangahlola:

• Ubumsulwa be-THF

• Amanzi kanye ne-asidi

• Okuqukethwe kokuqinisa

• Ukuvumelana phakathi kwamaqoqo okukhiqiza

• Ikhono lokupakisha nokudlulisa okuningi

• Ukulandeleka nokuqhubeka kokunikezwa

I-Organic Synthesis kanye ne-Grignard Reactions

I-THF isetshenziswa kabanzi njengendawo yokusabela yekhemikhali ye-organometallic ngoba umoya-mpilo wayo we-ether usiza ekuxazululeni izikhungo zensimbi. Ngokuvamile kuhlotshaniswa nama-reagents e-Grignard, ukuncishiswa, ukusabela kokuhlanganisa kanye nezinye izinguquko ezithinta umswakama.

Ukukhethwa kwebanga kufanele kusekelwe emanzini avunyelwe, isinzisi kanye nemikhawulo yokungcola. I-Anhydrous THF equkethe isizinzi ingase ifanelekele ukusabela okuthile, kuyilapho ezinye izinqubo zidinga ibanga elingenayo inhibitor.

Ama-coatings, ama-Adhesives nama-Resins

I-THF ingancibilikisa noma iguqule i-viscosity yama-polymer akhethiwe kanye nezinhlelo ze-resin. Izicelo zifaka:

• Osimende be-solvent ye-PVC

• Okunamathelayo okukhethekile

• Izembatho ze-polymer

• Izixazululo ze-resin

• Ukucubungula ifilimu nolwelwesi

• Ukusakaza kwe-polymer kwesilinganiso selabhorethri

Abakhiqizi kufanele baqinisekise ukuhambisana kwe-substrate, izinga lokuhwamuka, izilawuli zokuchayeka kubasebenzi kanye nezidingo zendawo ze-VOC.

Ukucutshungulwa Kwemithi kanye Namakhemikhali

Ekwenziweni kwemithi kanye namakhemikhali amahle, i-THF ingasetshenziswa njengesixazululi sokusabela, indawo yokukhipha noma insiza yokucubungula.

Imibandela yokuthenga ebalulekile ingabandakanya:

• Okuqukethwe kwamanzi okuchaziwe

• Isimemezelo sokuzinzisa

• Iphrofayili yokungcola

• Ukulandeleka kwenqwaba

• Isu lokulawula ukuncibilika kwensalela

• Ukushintsha okulindelwe kwesaziso

• Amadokhumenti okulawula nawomsuka

Ukusetshenziswa ekucutshungulweni kwemithi akubonisi ngokwako ukuthi umkhiqizo usezingeni lezemithi. Ibanga elidingekayo kufanele lifanelekele inqubo ethile kanye nemakethe.

Ukuhlanza, Ukukhipha kanye nokusetshenziswa kweLabhorethri

I-THF ingase isetshenziswe ekuhlanzeni okulawulwayo, ekukhishweni nasezinqubweni zaselabhorethri ngenxa yokuqina kwayo okubanzi. Ngaphambi kokusetshenziswa, qinisekisa ukuhambisana kwezinto, umoya omncane, ukuphatha imfucuza kanye namandla okunqwabelana kwe-peroxide.

I-Stabilised vs Inhibitor-Free THF

I-THF ye-inhibitor-free akumele ikhethwe ngoba nje ibonakala iwumkhiqizo 'ohlanzekile'. Ibanga elilungile ngokobuchwepheshe yilelo elihlangabezana kokubili nezidingo zenqubo-ukusebenza kanye nokuphatha ngokuphephile.

Ukuphatha Peroxide Formation in THF

I-THF ingenza ama-peroxides lapho evezwe umoya-mpilo, ikakhulukazi ngesikhathi sokugcina isikhathi eside noma lapho kusetshenziswa izinto ezingenazihibithi. Ama-peroxide angase agxile ngesikhathi sokuhwamuka noma ukucwiliswa emanzini.

Uhlelo lokuphatha lwe-THF oluqondene nesayithi kufanele lubhekane:

• Idethi yokutholwa kanye nedethi yokuvula

• Isimo sokuzinzisa

• Isikhathi sokugcina nezinga lokushisa

• Ukuchayeka emoyeni nasekukhanyeni

• Imvamisa yokuhlola i-peroxide nendlela

• Izinga eliphezulu elamukelekayo leperoxide

• Ukwelashwa kwezinto ezindala, ezingaziwa noma ezigxilile

• Imikhawulo ekufakweni kwe-distillation noma ukuhwamuka kuze kome

• Izinqubo zokulahla imfucuza ezifanele

Ungayisebenzisi, udlulise, ugxilise ingqondo noma udilize i-THF endala enomlando wesitoreji ongaziwa kuze kube yilapho isihloliwe ngaphansi kwenqubo yokuphepha egunyaziwe.

Ukupakisha, Isitoreji kanye Nokunikezwa Kwenqwaba

Ngokuya ngebanga, ubuningi bokuthunyelwa kanye nendawo okuyiwa kuyo, i-THF ingase ihlinzekwe ngezigubhu ezifanele, iziqukathi eziphakathi nendawo, amathangi e-ISO noma izinto zokuthutha ngobuningi. Ukutholakala kwamaphakheji kwangempela kufanele kuqinisekiswe ngesikhathi sekhotheshini.

I-THF kufanele igcinwe:

• Ezitsheni ezigunyaziwe, ezivalwe ngokuqinile

• Endaweni epholile, eyomile futhi enomoya omuhle yokugcina amakhemikhali

• Kude nokushisa, izinhlansi, amalangabi nezinto ezingahambelani ze-oxidizing

• Ngezinyathelo ezifanele zokubopha, ukubeka phansi kanye nokulawula umhwamuko

• Ngaphansi kwezimo ezivikela umkhiqizo emoyeni ongadingekile nokuchayeka ekukhanyeni

• Ngokuhambisana ne-SDS yamanje yomphakeli kanye nemithetho yendawo

Qinisekisa ukuthi iphakheji ecashuniwe iyabuyiselwa yini, imbozwe nge-nitrogen noma ingaphansi kwezidingo ze-oda elincane.

Ukucatshangelwa Kokuphepha, Umlilo kanye Nezokuthutha

I-THF iwuketshezi oluvutha kakhulu kanye nomhwamuko. Kungacasula amehlo nendlela yokuphefumula, futhi ukugcwala komhwamuko ophakeme kungathinta isimiso sezinzwa esimaphakathi. Umhwamuko wawo ungase uhambe uye emthonjeni wokuthungela bese ubuyela emuva.

Izilawuli ezijwayelekile zihlanganisa ukudlulisa okuvaliwe, ukungena komoya okusebenzayo, okokusebenza kukagesi okugunyaziwe, isilawuli somthombo wokuthungela, ibhondi kanye nokubeka phansi, okokuvikela komuntu siqu kanye nohlelo lokusabela ezimeni eziphuthumayo.

Okokuthutha, i-Tetrahydrofuran ivame ukukhonjwa ngokuthi:

• Inombolo ye-UN: UN 2056

• Igama elifanele lokuthumela: Tetrahydrofuran

• Isigaba esiyingozi: 3

• Iqembu lokupakisha: II

Leli khasi alithathi indawo Yedatha Yezokuphepha Yamanje. Hlala ulandela i-SDS, imithetho yezokuthutha esebenzayo kanye nezidingo zendawo zokuchayeka emsebenzini.

Amadokhumenti e-THF Supplier Qualification

Ngokuya ngemakethe nesicelo, abathengi bangacela:

• Isitifiketi Sokuhlaziya

• Ishidi Ledatha Yezokuphepha

• Ishidi Ledatha Yezobuchwepheshe

• Ukucaciswa komkhiqizo

• Isitatimende sezwe lemvelaphi

• Ukulandeleka kwenqwaba

• Isimemezelo sokuzinzisa

• Isitatimende se-Allergen noma imvelaphi yezilwane lapho kufanele khona

• REACH, TSCA noma olunye ulwazi lokulawula oluqondene nemakethe

• Imininingwane yokupakisha nezokuthutha

• Umgomo wokushintsha isaziso

Ukutholakala kwedokhumenti kanye nesimo sokulawula kufanele kuqinisekiswe izwe okuyiwa kulo ngaphambi koku-oda.

Okufanele Ukufake ku-THF RFQ

Ukuze uthole ikhotheshini esheshayo nenembe kakhulu, hlinzeka:

1. Igama lomkhiqizo kanye nenombolo ye-CAS

2. Ibanga elidingekayo

3. Ukuhlola okuncane

4. Ubuningi bokuqukethwe kwamanzi

5. Isidingo esizinzile noma esingena-inhibitor

6. Ububanzi obudingekayo be-BHT, uma bukhona

7. Umkhawulo ophezulu we-peroxide

8. Ukupakishwa okudingekayo

9. Oda inani kanye nesidingo sonyaka

10. Izwe lokulethwa, idolobha noma itheku

11. Isicelo esihlosiwe

12. Amadokhumenti noma izimfuneko zokulawula

Imibuzo Evame Ukubuzwa Mayelana Ne-Tetrahydrofuran

Iyini i-Tetrahydrofuran?

I-Tetrahydrofuran iyi-ether ejikelezayo engenambala, engaxubeki emanzini esetshenziswa njengesixazululi sezinto eziphilayo, indawo yokusabela kanye nendawo yamakhemikhali. Inombolo yayo ye-CAS ngu-109-99-9.

Ingabe i-THF i-organic noma i-inorganic?

I-THF iyinhlanganisela ephilayo. Ngokuqondile, iyi-ether equkethe umoya-mpilo, enamalungu amahlanu i-heterocyclic.

Ingabe i-THF iyi-solvent noma ikhemikhali ephakathi?

Kubili. I-THF isetshenziswa kabanzi njenge-solvent ne-reaction medium, kuyilapho amavolumu amakhulu abuye asetshenziswe njengendawo yamakhemikhali yokukhiqiza i-PTMEG.

Ingabe i-Tetrahydrofuran iyancibilika emanzini?

Yebo. I-THF ixubene namanzi. Lesi sakhiwo singaba usizo ezinqubweni ezithile kodwa futhi sisho ukuthi ukulawula umswakama kubalulekile ekusetshenzisweni okungezwani namanzi.

Uyini umehluko phakathi kwe-THF ye-anhydrous ne-inhibitor-free?

I-Anhydrous ichaza okuqukethwe kwamanzi aphansi alawulwayo. I-inhibitor-free isho ukuthi asikho isiqinisi esifana ne-BHT esingezwe ngamabomu. Ibanga le-THF lingaba ne-anhydrous ngenkathi lisaqukethe isiqinisi.

Kungani i-BHT yengezwe ku-THF?

I-BHT ijwayele ukungezwa ukuze kubambezeleke ukwakheka kwama-peroxides ngesikhathi sokugcinwa nokusabalalisa. Izinga le-BHT elidingekayo kufanele liqinisekiswe ngoba ukuqina kungase kuthinte ukusabela okuthile noma izindlela zokuhlaziya.

Ingabe i-THF ingakha ama-peroxides aqhumayo?

Yebo. I-THF ingakha ama-peroxides ayingozi ngesikhathi sokuchayeka kumoya-mpilo, ikakhulukazi ngesikhathi sokugcinwa isikhathi eside noma lapho ihlinzekwa ngaphandle kokuqiniswa. Ama-peroxides angaba yingozi kakhulu uma i-THF igxilile noma i-distilled.

Iliphi ibanga le-THF elifanele ukusabela kukaGrignard?

Ibanga lamanzi aphansi noma i-anhydrous livame ukudingeka, kodwa amazinga avunyelwe ukuzinza kanye nokungcola ancike ku-reagent ethile kanye nenqubo. Abathengi kufanele bacacise amanzi amaningi nokuthi i-BHT yamukelekile yini.

Yiluphi ulwazi okufanele luvele kusitifiketi sokuhlaziya se-THF?

I-CoA ewusizo ingase ibike ukuhlolwa, amanzi, umbala, i-asidi, okuqukethwe kwe-peroxide nokuqukethwe kokuqiniswa. Ukuhlolwa okwengeziwe kungavunyelwana ngezicelo zokuhlaziya, ezemithi noma ze-polymer.

Cela i-Tetrahydrofuran Quote

Sithumelele i-THF yakho edingekayo, i-assay, umkhawulo wamanzi, imfuneko yokuqinisa, ukupakisha, ubuningi nendawo oya kuyo. Sizoqinisekisa ukucaciswa okusebenzayo, imibhalo, izinketho zokupakisha kanye nemibandela yokuthengisa yesicelo sakho.

Ukuze uthole ukuhlanganiswa okubucayi noma ukukhiqizwa kwe-polymer, faka amazinga akho aphezulu avunyelwe amanzi, i-BHT ne-peroxide ukuze izinga elifanele lihlolwe.