Sulfur Tetrafluoride (SF4)

Kufotokozera

Sulfur tetrafluoride ndi mankhwala osakhazikika okhala ndi mamolekyulu a SF4. Ndi gasi wopanda mtundu, wowononga komanso wapoizoni kwambiri pamalo okhazikika. Kulemera kwa mamolekyu ndi 108.05, malo osungunuka ndi -124 ° C, ndi kuwira kwa -38 ° C. Ndiwothandiza kwambiri komanso wogwiritsidwa ntchito kwambiri posankha organic fluorinating wothandizira. Ikhoza kusankha fluorinate carbonyl ndi hydroxyl magulu. Ili ndi malo osasinthika popanga mankhwala abwino, zida zamadzimadzi zamadzimadzi komanso mafakitale apamwamba azamankhwala. Sulfur tetrafluoride ndi wosankha organic fluorinating wothandizira. Ndi mpweya wopanda mtundu wokhala ndi fungo lamphamvu lofanana ndi mpweya wa sulfure dioxide pansi pa kutentha kwabwino komanso kupanikizika. Ndi poizoni ndipo siwotcha kapena kuphulika mumlengalenga; pa 600 ° C Kukhazikikabe kwambiri. Mphamvu ya hydrolysis mumlengalenga imatulutsa utsi woyera. Kukumana ndi chinyezi m'malo kungayambitse dzimbiri ngati hydrofluoric acid. Kwathunthu hydrolyzed mu sulfure dioxide ndi hydrofluoric asidi, pamene mbali hydrolyzed, amapanga poizoni thionyl fluoride, koma akhoza kwathunthu odzipereka ndi amphamvu soda njira kukhala sanali poizoni ndi mchere wopanda vuto; imatha kusungunuka mu benzene. Sulfur tetrafluoride ndiyomwe imagwiritsidwa ntchito kwambiri posankha organic fluorinating. Ikhoza kusankha fluorinate carbonyl ndi hydroxyl magulu (kulowetsa mpweya mu carbonyl munali mankhwala); amagwiritsidwa ntchito kwambiri mu mankhwala abwino opangira zida zapamwamba zamadzimadzi zamadzimadzi komanso Kupanga mankhwala opangira mankhwala ndi mankhwala ophera tizilombo kumakhala ndi malo osasinthika. Itha kugwiritsidwanso ntchito ngati gasi wamagetsi, kuyika kwa nthunzi wamankhwala, wothandizila pamwamba, plasma youma etching ndi zina zambiri. Amagwiritsidwa ntchito mu organic synthesis, ndi reagent wamba popanga ma fluorocarbons. Sulfur tetrafluoride imasungidwa m'nyumba yosungiramo mpweya wozizira. Iyenera kusungidwa mosiyana ndi zotulutsa, mankhwala odyedwa, ndi zitsulo zamchere, komanso kutali ndi moto ndi kutentha.

Ntchito:

① Organic fluorination wothandizira:
The kwambiri mkulu selectivity fluorinating wothandizila chimagwiritsidwa ntchito apamwamba kalasi madzi galasi zakuthupi ndi fluorine munali mankhwala, mankhwala ndi intermediates; Itha kugwiritsidwanso ntchito ngati ma elekitironi gasi, kuyika kwa nthunzi wamankhwala, mankhwala ochizira pamwamba, etching youma, plasma ndi zina.

Phukusi labwinobwino:

Ubwino:

①Kupitilira zaka khumi pamsika;
② ISO wopanga satifiketi;
③Kutumiza mwachangu;
④Stable zopangira gwero;
⑤Dongosolo lowunikira pa intaneti pakuwongolera kwamtundu uliwonse;
⑥Kufunika kwakukulu komanso kusamala pogwira silinda musanadzaze;