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Ke hoʻomohala ʻana i ka acidic gallic purity kiʻekiʻe a me kāna noi ʻana i ka kemika uila

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Nānā pinepine nā mea uila uila i nā kemika kūikawā no ka ʻoihana uila. I kēia manawa, aia he mau kaukani mau ʻano, e noi nei i nā koina kiʻekiʻe, hoʻohaʻahaʻa haʻahaʻa, nā koi kiʻekiʻe no ka hoʻomaʻemaʻe o ka hana a hoʻohana i ke kaiapuni a me ka hoʻomaikaʻi wikiwiki .Ua hoʻomaʻemaʻe keʻokeʻo kiʻekiʻe ʻole maʻemaʻe (ʻike ʻia ʻo Wet Chemicals , a i ʻole Nā Kemikala Hana), kahi lālā nui nō hoʻi o nā kemika uila, hoʻohana nui ʻia no ka hoʻomaʻemaʻe ʻana i ka ʻāpana (e like me ka hoʻomaloʻo ʻana), photolithography, etching, development, film Removal, doping Miscellaneous, e pili ana ma mua o 80 mau kemikal kūikawā. ʻakika maʻemaʻe kiʻekiʻe A me nā alkalis, nā hoʻomaʻemaʻe a me ka hoʻomaʻemaʻe kiʻekiʻe kiʻekiʻe a me ka etchant ʻoi loa. Eia mākou ke hoʻolauna nei i nā huahana hou o kēia acid-high-purity gallic acid
ʻO ka waikawa Gallic (GA), a i ʻike ʻia hoʻi me ka acidic gallic, a me ka acidic gallic, he aniani keʻokeʻo a ʻeleʻele melemele paha e like me ka aniani a pauka paha, ʻo kona inoa kemika 3,4,5-Trihydroxyl benzoic acid (3,4,5-Trihydroxyl benzoic. ʻakika). ), mole mole C7H6O5, mole mole mole 170.12, ma o ka hana mau ʻia ma ke ʻano o ka monohidate me kahi umekaumaha kikoʻī o 1.694 a me kahi kiko hoʻoheheʻe o 235 a 240 ° C (decomposition). Ke hoʻomehana ʻia i 100 ~ 120 ℃, nalowale ka wai aniani: ke wela ʻia ma luna o 200 ℃, e lilo ka CO2 Hoʻopuka ia i pyrocarbon GA; maʻalahi maʻalahi ia i loko o ka wai wela, ether, ethanol, acetone a me glycerin, akā paʻakikī hiki ke hoʻoheheʻe ʻia i ka wai anuanu, ʻaʻole hiki ke hoʻoheheʻe ʻia i ka benzene, acetic acid a me chloroform; ka hopena make no ka ʻoki ʻana subcutaneole ʻiole ʻo 4000mg / Kg: ʻo ka waiwai pH o ka wai aqueous solution 3 ~ 4; He reducibility ikaika, astringent a me astringent ʻono, hiki ke hōʻemi i nā paʻakai gula a me nā kala a me ka hopena a Fehling, a hana me ka ferric chloride e hana i ka Precipitation polū ʻeleʻele, i kēia manawa he kemikino maikaʻi i hana nui ʻia me ka ʻawa a me tara e like me nā mea maka.
He laulā nā noi a Gallic acid, hoʻohana nui ʻia i ka synthetic synthetic, coatings, dyes, lāʻau lapaʻau, meaʻai, chemicals, tanning, nā kemikū o kēlā me kēia lā, nā mahiʻai, nā minelala, a pēlā aku, hoʻohana nui ʻia i ka hana ʻana i nā lāʻau, nā kala, nā inika, a hoʻohana pū ʻia e like me nā meaʻai antioxidant, nā mea mālama, nā mea hoʻoiho hao, nā mea hoʻoiho ultraviolet, nā mea disinfectants, nā astringents hemostatic, nā ʻenekini kiʻi, nā mea hoʻoheheʻe kemika, nā ʻenekini fluidizing lepo a me nā mea ulu ulu hua waina, a pēlā aku. He mea waiwai kemika pono nui ia.
I nā makahiki i hala aku nei, ua hoʻohana ʻia ka papa kemika uila a me ka waikawa galic kiʻekiʻe ma ka ʻoihana uila no US e holoi i nā papa kaapuni hoʻohui nui.
Ua koʻikoʻi loa kāna mau koina e pono ai, ʻo nā mea kuhikuhi nui: GA≥99.5%, Na, K, Fe, Cu, Pb, Al, Cr, Zn, Mn, Ni a pau ≤0.1 mg / kg (ʻo ia ke koena o ka nui ʻo nā ion hao he 1 * 10-7 pae). No laila, no ka hemo ʻana o nā ion metala i loko o ka waikawa galic e hoʻomākaukau i ke kī i ka waikawa gallic purity kiʻekiʻe.


Ka manawa Post: Mei-07-2021