tsa tsau-tsau
Li-intermediate tsa meriana li bua ka lisebelisoa tse ling tsa lik'hemik'hale kapa lihlahisoa tsa lik'hemik'hale tse sebelisoang ts'ebetsong ea ho kopanya meriana.
Ho ea ka indasteri, indasteri ea meriana ea meriana, e le tšimo ea bohlokoa ea indasteri e ntle ea lik'hemik'hale, e tla ba le sebaka se seholo sa nts'etsopele nakong e tlang.
| Sehlahisoa | CAS |
| N, N-Dimethyl-p-toluidine DMPT | 99-97-8 |
| N, N-Dimethyl-o-toluidine DMOT | 609-72-3 |
| 2,3-Dichlorobenzaldehyde | 6334-18-5 |
| 2′,4′-Dichloroacetophenone | 2234-16-4 |
| 2,4-Dichlorobenzyl joala | 1777-82-8 |
| 3,4′-Dichlorodiphenyl ether | 6842-62-2 |
| 2-chloro-4-(4-chlorophenoxy)acetophenone | 119851-28-4 |
| 2, 4-dichloroluene | 95-73-8 |
| o-Phenylenediamine | 95-54-5 |
| o-Toluidine OT | 95-53-4 |
| 3-Methyl-N,N-diethyl aniline | 91-67-8 |
| N,N-Diethyl aniline | 91-66-7 |
| N-Ethylaniline | 103-69-5 |
| N-Ethyl-o-toluidine | 94-68-8 |
| N,N-Dimethylaniline DMA | 121-69-7 |
| 2-Nafthole Beta naphthol | 135-19-3 |
| Auramine O | 2465-27-2 |
| Crystal violet lactone CVL | 1552-42-7 |
Ho tloha nalaneng ea nts'etsopele ea indasteri ea lipakeng tsa meriana ea China, kamora lilemo tse ka bang 30 tsa nts'etsopele, li-intermediate tsa meriana li tsoetse pele ho tloha lekaleng le lenyane la indasteri ea lik'hemik'hale ho ea indastering e ntseng e hlaha e nang le boleng ba li-yuan tse libilione, mme tlholisano ea mmaraka e ntse e mpefala le ho feta. .
Ho utloisisoa hore qalong ea nts'etsopele ea indasteri ea li-intermediates tsa meriana, ka lebaka la matsete a manyane le phaello e phahameng, likhoebo tsa lipakeng tsa meriana li hlaha joalo ka letlobo la bamboo kamora pula, haholo-holo Zhejiang, Taizhou, Nanjing le libakeng tse ling tse nang le maemo a matle. maemo bakeng sa ntshetsopele ya meriana intermediates ntshetsopele ke haholo-holo ka potlako.
Hona joale, ha phetoho ea mekhoa ea 'maraka oa bongaka, hammoho le tlhahiso ea lithethefatsi tse ncha' marakeng e fokotsehile, bothata ba indasteri ea meriana ea meriana e ntse e tsoela pele ho hlahisa lihlahisoa tse ncha le ho feta, sehlahisoa sa setso se ntse se fetoha tlhōlisano e matla le ho feta. , phaello ea indasteri ea meriana e ile ea theoha ka potlako, 'me li-intermediate tsa meriana li fetoha bothata ba ho nahana ka bothata ba tsoelo-pele ea khoebo.
Indasteri e lumela hore ho ka khoneha ho iketsetsa melemo ea tlhōlisano ho tloha likarolong tsa theknoloji, tšusumetso, phetoho le tse ling, e le hore e hlahelle 'marakeng.
Mabapi le theknoloji, haholo-holo e bua ka ho ntlafatsa theknoloji le ho boloka litšenyehelo.
Ho tlalehoa hore li-intermediate tsa meriana li na le tsela e telele ea ts'ebetso, mehato e mengata ea ho arabela, tekanyo e kholo ea solvent, le menyetla e mengata ea ntlafatso ea tekheniki.
Mohlala, thepa e tala ea boleng bo tlase e ka sebelisoa sebakeng sa lisebelisoa tse tala tsa boleng bo holimo, joalo ka bromine e nkang sebaka ha ho etsoa aminotaxime acid, ammonium thiocyanate sebakeng sa potassium thiocyanate (sodium) tlhahiso, jj.
Ho phaella moo, solvent e le 'ngoe e ka boela ea sebelisoa ho nkela li-solvents tse fapaneng sebakeng sa karabelo,' me joala bo hlahisoang ke hydrolysis ea lihlahisoa tsa ester bo ka fumanoa.
Karolong ea ts'usumetso, haholo-holo ke ho theha lihlahisoa tsa eona tsa sebopeho le ho ntlafatsa tšusumetso indastering.
Hoa utloisisoa hore ka lebaka la indasteri ea lipakeng tsa meriana ea China, tlholisano ea homogenization ea sehlahisoa e tebile, haeba khoebo e ka iketsetsa lihlahisoa tsa eona tse phahameng, e tla khona ho fumana melemo e mengata 'marakeng.
Mabapi le phetoho, hajoale, ha litlhoko tsa ts'ireletso ea tikoloho ea lehae li ntse li thatafala, lisebelisoa li sekametse indastering e phahameng ea boleng bo holimo, 'me ka keketseho ea litšenyehelo tsa ts'ireletso ea tikoloho, phetoho e fetohile bothata boo likhoebo tsa lipakeng tsa meriana li lokelang ho nahana ka tsona. ntshetsopele e tsitsitseng.
Ho khothaletsoa hore likhoebo tsa lipakeng tsa meriana li atolose ketane ea indasteri ho ea holimo le tlase, le ho fetisetsa thepa e tala eo ba e sebelisang tlhahisong ea bona, e ka fokotsang litšenyehelo. Ho sa le joalo, bakeng sa lisebelisoa tse khethehileng tse tala, e ka qoba monopoly ea lisebelisoa tsa bohlokoa tse tala.
Indasteri e re ho theosa le tsela, moo li-intermediate tsa meriana li kenngoa ka ho toba ho li-API, li ka eketsa boleng bo eketsehileng ba lihlahisoa ha li ntse li li rekisa ka ho toba lik'hamphani tsa meriana.
Ke habohlokoa ho hlokomela hore matsete a tlaase a tlaase a maholo, ha litlhoko tsa theknoloji ea tlhahiso li phahame, 'me hoa hlokahala ho boloka kamano e ntle le bahlahisi ba sebelisang API.
Ka kakaretso, likhoebo tse etellang pele li ka fumana melemo e mengata ea tlholisano.
Ho feta moo, lipatlisiso le nts'etsopele li bohlokoa haholo indastering e bohareng. Hajoale, indasteri ea lipakeng tsa meriana Chaena ka kakaretso ha e ele hloko haholo lipatlisiso le nts'etsopele.
Ka hona, tikolohong ea ho lula e ntlafatsa litlhoko tsa tekheniki, likhoebo tse sebetsang hantle tsa R&D tse nang le matla a matla a R&D li tla hlahella, athe likhoebo tse nyane le tse mahareng tse se nang bokhoni ba R&D li ka felisoa ke mmaraka. Nakong e tlang, ts'ebetso ea indasteri e tla eketseha le ho feta, 'me boemo ba tsoelo-pele bo bohareng le bo tlaase bo tla ba boemong bo phahameng.
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Nako ea poso: Apr-25-2021