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Lebitso la Sehlahiswa:Ethyl acetate

Sebopeho sa molek'hule:C4H8O2

Nomoro ea CAS:141-78-6

Sehlahisoa sebopeho sa molek'hule:

Lintho tsa Lik'hemik'hale:

Ethyl acetate (sebopeho se bontšitsoeng ka holimo) ke ester e tloaelehileng ka ho fetisisa ho liithuti tse ngata tsa k'hemistri mme mohlomong ester e nang le mefuta e mengata ea tšebeliso. Li-ester li entsoe ka mokhoa o hlophisitsoeng ho tsoa ho li-carboxylic acid ka ho nkela asiti ea hydrogen ka sehlopha sa alkyl kapa aryl. Ethyl acetate ka boeona ke mokelikeli o se nang 'mala mocheso oa kamore o nang le monko o monate oa "tholoana", bp 77°C.

Ethyl acetate e na le litšebeliso tse ngata, joalo ka litlolo tsa maiketsetso tsa litholoana le li-envelopers tsa monko, litatso tsa maiketsetso bakeng sa confectionery, ice cream le likuku, joalo ka sehlapi sa likopo tse ngata (ho kenyeletsoa tee le kofi ea decaffeinating) bakeng sa li-varnish le lipente (se tlosang lipekere tsa lipekere), le bakeng sa ho etsa li-inki tsa khatiso le litlolo tse nkhang hamonate.

Kopo:

Ethyl acetate e sebelisoa haholo-holo e le mokelikeli le mokelikeli, e ratoa ka lebaka la theko e tlaase, chefo e tlaase, le monko o monate. Ka mohlala, hangata e sebelisoa ho hloekisa mapolanka a potoloho le ho li-varnish tse ling tsa lipekere (acetone le acetonitrile li boetse li sebelisoa). Linaoa tsa kofi le makhasi a tee li na le caffeine ka solvent ena. E boetse e sebelisoa lipenteng e le activator kapa harderer. Litlolong tse nkhang hamonate, e fetoha mouoane ka potlako, e siea feela monko oa setlolo letlalong.
3 - 1 - Ts'ebeliso ea laboratori
Ka laboratoring, metsoako e nang le ethyl acetate hangata e sebelisoa ho kholumo ea chromatography le ho ntšoa. Ethyl acetate ha e khethoe ka seoelo joalo ka sehlaseli sa karabelo hobane e na le hydrolysis le trans esterification.
3 - 2 - Ho etsahala ka veine
Ethyl acetate ke ester e tloaelehileng ka ho fetisisa veineng, kaha ke sehlahisoa sa asiti e tloaelehileng e sa fetoheng - acetic, le joala ba ethyl bo hlahisoang nakong ea ho belisoa. Monko o monate oa ethyl acetate o hlakile haholo liveineng tse nyane mme o kenya letsoho mabapi le maikutlo a akaretsang a "tholoana" veineng.
3 - 3 - Entomological bolaeang
Lefapheng la entomology, ethyl acetate ke asphyxiant e sebetsang hantle bakeng sa ho bokelloa le ho ithuta ha likokoanyana. Ka nkho ea ho bolaea e qosoa ka ethyl acetate, mouoane o tla bolaea kokoanyana e bokelitsoeng (hangata e kholo) ka potlako ntle le ho e senya. Kaha ha se hygroscopic, ethyl acetate e boetse e boloka kokoanyana e le bonolo ho lekana ho lumella ho hlongoa ho loketseng bakeng sa pokello.