Kuchazwa Ukuminyana kwe-DMF: Ukubheka Kabanzi Izakhiwo Zokuminyana kwe-Dimethylformamide
1. Yini i-DMF?
I-DMF, eyaziwa ngesiShayina ngokuthi i-Dimethylformamide (i-Dimethylformamide), iwuketshezi olungenambala, olusobala nolune-hygroscopic ngokwedlulele olusetshenziswa kakhulu ezimbonini zamakhemikhali, ezemithi, zikagesi nezendwangu. Ine-solubility enhle futhi ingancibilikisa izinhlobonhlobo zezinto eziphilayo kanye ne-inorganic, ngakho idlala indima ebalulekile ezinqubweni eziningi zezimboni.
2. Umqondo oyisisekelo wokuminyana kwe-DMF
Ukuminyana isilinganiso sesisindo nevolumu yento, ngokuvamile evezwa njengesisindo ngevolumu yeyunithi. Embonini yamakhemikhali, kubalulekile ukuqonda ukuminyana kwe-DMF njengoba ithinta ngokuqondile ukulinganisa, ukuthuthwa kanye nokusetshenziswa kwento.Ukuminyana kwe-DMF kuvame ukuvezwa ngo-g/cm³ noma kg/m³. Emazingeni okushisa ajwayelekile (20°C), i-DMF inokuminyana okungaba ngu-0.944 g/cm³. Leli nani lingahluka kancane kuye ngezinga lokushisa nobumsulwa.
3. Umthelela wezinga lokushisa kubuningi be-DMF
Izinga lokushisa linomthelela omkhulu ekuminyana kwe-DMF. Njengoba izinga lokushisa likhuphuka, ukuminyana kwe-DMF kuvame ukuncipha. Lokhu kungenxa yokunyakaza kwamangqamuzana okusheshisa uketshezi, okuholela ekwandeni kwesikhala phakathi kwama-molecule futhi ngaleyo ndlela kube nesisindo esincane ngevolumu yeyunithi ngayinye. Ukuze uthole izinhlelo zokusebenza ezinembile zezimboni, kuyadingeka ukuqonda ushintsho ku-DMF kumazinga okushisa ahlukene. Isibonelo, lapho kwenziwa ukusabela kwamakhemikhali emazingeni okushisa aphezulu, ukuguqulwa kokuminyana kwe-DMF kufanele kucatshangelwe ukuze kuqinisekiswe ukunemba kwe-metrological.
4. Umthelela wokuminyana kwe-DMF kuzicelo zezimboni
Ukuminyana kwe-DMF kunemiphumela ebalulekile ekusebenzeni kwezimboni. Isibonelo, i-DMF ivame ukusetshenziswa njenge-solvent ezinqubweni zokulungiselela izidakamizwa. Ukuminyana kwayo kuthinta inani kanye nokugxila kwe-solvent, okubuye kuthinte ikhwalithi nokuhlanzeka komkhiqizo wokugcina. Ekukhiqizeni amakhemikhali, ukuminyana kwe-DMF nakho kuhlobene nokuthuthwa kwezinto ezibonakalayo nokugcinwa. Ukuqonda ukuminyana kwe-DMF kungasiza ukukhulisa inqubo futhi kunciphise izindleko zokukhiqiza.
5. Ungakala kanjani ukuminyana kwe-DMF ngokunembile?
Ukuze uthole ukuminyana okunembile kwe-DMF, ukulinganisa kusetshenziswa i-densitometer enembayo ephezulu noma ibhodlela elithile lamandla adonsela phansi liyadingeka. Endaweni yaselabhorethri, izinga lokushisa elingaguquki kanye nesampula elimsulwa kufanele kugcinwe ukuze kuqinisekiswe ukwethembeka kwemiphumela yokulinganisa. Ezindaweni zezimboni, ukuqapha kwesikhathi sangempela kungenziwa futhi nge-densitometer eku-inthanethi ukuze imingcele yenqubo ilungiswe ngesikhathi esifanele.
6 Ukufingqa
Ukuminyana kwe-DMF kungenye yezinto ezibalulekile ezibonakalayo ze-dimethylformamide, into yamakhemikhali ebalulekile, futhi ukuqonda nokufunda kahle izici zayo zokuminyana kubalulekile ekukhiqizweni nasekusetshenzisweni kwamakhemikhali. Ngokulinganisa okunembile nokuhlaziya kwesayensi, singasebenzisa kangcono i-DMF ukuze sithuthukise ukusebenza kahle kokukhiqiza nokuqinisekisa ikhwalithi yomkhiqizo. Ezimweni ezihlukene zezimboni, izinguquko ekuminyana kwe-DMF zingase zilethe imiphumela ehlukene, ngakho-ke kubaluleke kakhulu ukuba nokuqonda okujulile nokulawula kwayo.
Ngokuhlaziya okungenhla, singabona ukuthi ukwazi kahle umthetho woshintsho nendlela yokulinganisa yokuminyana kwe-DMF kuyisisekelo sokuqinisekisa ukuqhubeka kahle kwenqubo yokukhiqiza amakhemikhali. Sethemba ukuthi lesi sihloko singakusiza uqonde kangcono ukubaluleka kokuminyana kwe-DMF futhi sikunikeze ireferensi yokukhiqiza nocwaningo lwakho.