Kodi intermediates mankhwala ndi chiyani?

Mankhwala apakatikati, mwachidule, ndi zinthu zopangira mankhwala kapena mankhwala omwe amagwiritsidwa ntchito popanga mankhwala. Ndizinthu zomwe zimakhala ndi katundu wapadera wopangidwa ndi machitidwe a mankhwala a zipangizo ziwiri kapena zingapo zosiyana moyenerera. Izi zapakati ndizofanana koma zimasiyana mu kapangidwe ka mankhwala, monga ethyl acetate ndi n-butyl propionate, methyl methacrylate ndi methyl acrylate, ndi zina zotero. monga bata, solubility, etc. Mbali yofunika ya intermediates mankhwala ndi kuti ngakhale amagwira ntchito yofunika kwambiri popanga mankhwala, iwo safuna chilolezo kupanga mankhwala. Izi zikutanthauza kuti amatha kupangidwa m'mafakitale wamba amankhwala ndipo, malinga ngati akwaniritsa zofunikira zina, atha kugwiritsidwa ntchito popanga mankhwala. Ndikoyenera kudziwa kuti mankhwala apakatikati amankhwala nthawi zambiri amakhala okwera mtengo, omwe amakhudzana ndi njira zawo zopangira zovuta komanso zofunika kwambiri. Koma ndizovuta komanso zovuta izi zomwe zimapangitsa kuti apakatikati azachipatala azikhala ofunikira kwambiri pamakampani opanga mankhwala. Komanso, intermediates mankhwala ndi mbali yofunika ya makampani China mankhwala. Pambuyo pakukula kwazaka zambiri, zida zamagetsi ndi zida zapakati zomwe zimafunikira kuti apange mankhwala aku China zidagwirizana, ndipo gawo laling'ono lokha ndilofunika kutumizidwa kunja. Komanso, chifukwa cha chuma chambiri cha dziko langa komanso mitengo yotsika ya zinthu zopangira mankhwala, ambiri apakatikati atumizidwa kunja kwachulukidwe, zomwe zapambana mbiri yapadziko lonse yamakampani opanga mankhwala a dziko langa.

Nthawi zambiri, mankhwala apakatikati ndi gawo lofunikira pamakampani opanga mankhwala. Ndi mankhwala awo apadera komanso njira zopangira, amapereka maziko olimba opangira mankhwala ndipo athandizanso kwambiri paumoyo wa anthu. perekani.