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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 lintho tse matlafatsang monko, litatso tsa maiketsetso bakeng sa confectionery, ice cream le likuku, joalo ka sehlapolli sa lits'ebetso tse ngata (ho kenyeletsoa tee le kofi) bakeng sa li-varnish le lipente (sehlahisoa sa lipekere), le bakeng sa moetso wa dienke le dinkgisa monate tsa ho hatisa.

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. Hobane ha se hygroscopic, ethyl acetate e boetse e boloka kokoanyana e le bonolo ho lumella ho hlongoa ka nepo ho loketseng pokello.