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Ukuthuthukiswa kwe-high-purity gallic acid kanye nokusetshenziswa kwayo kumakhemikhali kagesi

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Amakhemikhali kagesi ngokuvamile abhekisa kumakhemikhali akhethekile embonini ye-elekthronikhi. Njengamanje, kukhona amashumi ezinkulungwane zezinhlobonhlobo, ezicela izidingo zekhwalithi ephezulu, ukusetshenziswa okuphansi, izidingo eziphakeme zokuhlanzeka kwendawo yokukhiqiza nokusetshenziswa nokuvuselelwa ngokushesha .Ultra-clean high-purity reagents chemical (owaziwa nangokuthi Amanzi Amanzi , noma i-Process Chemicals), futhi Ilungu elibaluleke kakhulu lamakhemikhali kagesi, ikakhulukazi asetshenziselwa ukuhlanza i-chip (kufaka phakathi ukomiswa), i-photolithography, i-etching, ukuthuthukiswa, ukususwa kwefilimu, i-doping Okuxubile, okubandakanya amakhemikhali akhethekile angaphezu kuka-80. i-asidi ehlanzekile ephezulu ne-alkalis, i-ultra-ehlanzekile ne-high-purity solvents organic kanye ne-ultra-high-purity etchant. Lapha sethula imikhiqizo emisha yalo mndeni ohlanze kakhulu i-gallic acid
IGallic acid (GA), eyaziwa nangokuthi i-gallic acid, i-gallic acid, iyi-crystal noma impuphu emhlophe noma ekhanyayo ephuzi, igama layo lamakhemikhali lingu-3,4,5-Trihydroxyl benzoic acid (3,4,5-Trihydroxyl benzoic i-asidi). ), ifomula yamangqamuzana C7H6O5, isisindo samangqamuzana 170.12, ngokusebenzisaImvamisa ikhona ngesimo se-monohydrate ngobukhulu obuthile be-1.694 nendawo yokuncibilika engu-235 kuye ku-240 ° C (ukubola). Lapho ifutheliswa ibe ngu-100 ~ 120 ℃, ilahlekelwa amanzi e-Crystal: Uma ishubile ibe ngaphezu kuka-200 ℃, izolahlekelwa yi-CO2. Ikhiqiza i-pyrocarbon GA; iyancibilika kalula emanzini ashisayo, i-ether, i-ethanol, i-acetone ne-glycerin, kepha kunzima ukuncibilika emanzini abandayo, ayincibiliki nge-benzene, i-acetic acid ne-chloroform; Umthamo obulalayo womjovo ongaphansi kwegundane ngu-4000mg / Kg: inani le-pH lesisombululo esinamandla liyi-3 ~ 4; Inokuncishiswa okunamandla, ukunambitheka okungaqondakali futhi okungaqondakali, kunganciphisa usawoti wegolide nowesiliva kanye nesisombululo sikaFehling, futhi kuphendule nge-chloride enefriji ukukhiqiza Ukuzika okuluhlaza okwesibhakabhaka-mnyama, njengamanje ikhemikhali elibalulekile elicolekile elivezwa ngenyongo noma i-tara njengezinto zokusetshenziswa.
I-Gallic acid inezicelo ezahlukahlukene, ezisetshenziswa kakhulu ku-organic synthesis, ukumboza, udayi, umuthi, ukudla, amakhemikhali, ukushuka, amakhemikhali ansuku zonke, ezolimo, amaminerali, njll., Ezisetshenziswa kakhulu ekwenziweni kwezidakamizwa, odayi, uyinki, kanye futhi isetshenziswa njengama-antioxidants okudla, izivimbeli zokonga, okukhipha insimbi, i-ultraviolet absorber, ama-disinfectants, ama-astringents we-hemostatic, ama-imaging agents, ama-reagents amakhemikhali, ama-fluid fluidizing agents kanye nama-agent okukhulisa amagilebhisi, njll. Ngaphezu kokuhlangabezana nezidingo zasekhaya, umkhiqizo uthengiswa kakhulu phesheya. Kuyinto ebalulekile yesithako samakhemikhali esibalulekile.
Eminyakeni yamuva nje, ibanga lamakhemikhali elekthronikhi ne-high-purity gallic acid lisetshenzisiwe embonini yezobuchwepheshe yase-US ukugeza amabhodi wesekethe ahlanganisiwe amakhulu.
Izidingo zayo zekhwalithi ziqinile kakhulu, izinkomba eziyinhloko yilezi: GA≥99.5%, Na, K, Fe, Cu, Pb, Al, Cr, Zn, Mn, Ni are all≤0.1 mg / kg (okungukuthi, inani elisele Izinsimbi ion 1 * 10-7 ezingeni). Ngakho-ke, ukususa i-trace metal ions ku-gallic acid ukulungiselela ukhiye wokuhlanzeka okuphezulu kwe-gallic acid.


Isikhathi Iposi: May-07-2021