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Ukuphuhliswa kwe-asidi ye-gallic ephezulu yokucoceka kunye nokusetyenziswa kwayo kwi-chemistry ye-elektroniki

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Imichiza ye-elektroniki ngokubanzi ibhekisa kwiikhemikhali ezizodwa zeshishini le-elektroniki. Okwangoku, kukho amashumi amawaka eentlobo, ezifuna iimfuno ezikumgangatho ophezulu, ukusetyenziswa okuncinci, iimfuno eziphezulu zokucoceka kwemveliso kunye nokusetyenziswa kwendalo kunye nokunyusa ngokukhawuleza .Ultra-clean-high-purity reagents chemical (ekwabizwa ngokuba ziMichiza emanzi , okanye iNkqubo yeeKhemikhali), ikwayiLungu elibaluleke kakhulu kwimichiza ye-elektroniki, esetyenziselwa ukucoca i-chip (kubandakanya ukomisa), ifotolithography, ukutyeba, uphuhliso, ukususa ifilimu, ukusebenzisa iziyobisi ngezinto ezahlukeneyo, kubandakanya iikhemikhali ezizodwa ezingaphezu kwe-80. I-asidi yokucoceka okuphezulu kunye ne-alkalis, i-ultra-ecocekileyo kunye ne-high-purity solvents ye-organic kunye ne-ultra-high-purity etchant. Apha sizisa iimveliso ezintsha zolu sapho-ubumsulwa obuphezulu be-gallic acid
IGallic acid (GA), ekwabizwa ngokuba yi-gallic acid, i-gallic acid, iyimhlophe okanye ukukhanya okukhanyayo okufana nenaliti njengekristale okanye umgubo, igama layo leekhemikhali liyi-3,4,5-Trihydroxyl benzoic acid (3,4,5-Trihydroxyl benzoic asidi). ), ifomula yeemolekyuli C7H6O5, ubunzima beemolekyuli 170.12, ngenxa yokuba ihlala ikhona ngohlobo lwe-monohydrate enobunzima obuthile be-1.694 kunye nendawo yokunyibilika ye-235 ukuya kwi-240 ° C (ukubola). Xa ushushu ukuya kwi-100 ~ 120 ℃, ulahlekelwa ngamanzi e-Crystal: Xa ushushu ngaphezulu kwe-200 ℃, iya kuphulukana ne-CO2. Ivelisa i-pyrocarbon GA; kulula ukunyibilika emanzini ashushu, i-ether, i-ethanol, i-acetone kunye ne-glycerin, kodwa kunzima ukunyibilika emanzini abandayo, ingenakunyibilika kwi-benzene, i-acetic acid kunye ne-chloroform; Idosi ebulalayo yenaliti engaphantsi kwenaliti yi-4000mg / Kg: ixabiso le-pH yesisombululo esinamandla yi-3 ~ 4; Inokuncitshiswa okunamandla, ukunambitheka okungafunekiyo kunye nokuthamba, kunokunciphisa iityuwa zegolide nezesilivere kunye nesisombululo sikaFehling, kwaye isabele nge-chloride ye-ferric ukuvelisa ukuNcwina okuluhlaza-mnyama, okwangoku ikhemikhali entle entle eveliswa ngenyongo okanye i-tara njengezinto ezingafunekiyo.
I-Gallic acid inezicelo ezininzi, ezisetyenziswa kakhulu kwi-organic synthesis, iipeyinti, iidayi, amayeza, ukutya, iikhemikhali, ukushuka, iikhemikhali zemihla ngemihla, ezolimo, izimbiwa, njl., Zisetyenziswa kakhulu ekwenziweni kweziyobisi, iidayi, ii-inki, kunye ikwasetyenziswa njengee-antioxidants zokutya, izinto ezisigcinayo, isicoci sesinyithi, i-ultraviolet absorber, izibulala-ntsholongwane, ii-hemostatic astringents, ii-imaging agents, izixhobo zeekhemikhali, iiarhente zokunyibilikisa udaka kunye neearhente zokukhula kweediliya, njl.njl. Ukongeza kwimfuno yasekhaya, imveliso ithengiswa ikakhulu kumazwe aphesheya. Yinto ebalulekileyo efanelekileyo yesithako semichiza.
Kwiminyaka yakutshanje, ibakala leekhemikhali elektroniki kunye ne-acid ephezulu yokusulungeka lisetyenzisiwe kwishishini le-elektroniki laseMelika ukuhlamba iibhodi zesekethe ezihlanganisiweyo ezinkulu.
Iimfuno zalo ezisemgangathweni zingqongqo ngokukodwa, izalathi ezona ziphambili zezi: GA≥99.5%, Na, K, Fe, Cu, Pb, Al, Cr, Zn, Mn, Ni are≤0.1 mg / kg (Oko kukuthi, isixa sentsalela ion zentsimbi yi-1 * 10-7 yenqanaba). Ke ngoko, ukususa ii-ion zentsimbi kwi-gallic acid kukulungiselela isitshixo kucoceko oluphezulu lwe-acid.


Ixesha Post: May-07-2021