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Aha ngwaahịa:Ethyl acetate

Ọkpụkpọ anụ ahụ:C4H8O2

CAS Mba:141-78-6

Ọdịdị molekụla ngwaahịa:

Njirimara kemịkalụ:

Ethyl acetate (nhazi egosiri n'elu) bụ ester kacha mara nke ọma nye ọtụtụ ụmụ akwụkwọ kemịkalụ yana ikekwe ester nwere oke ojiji. A na-enweta Esters n'usoro site na acid carboxylic site n'iji otu alkyl ma ọ bụ aryl dochie hydrogen acid. Ethyl acetate n'onwe ya bụ mmiri mmiri na-enweghị agba na okpomọkụ nke ụlọ nke nwere ísì "mkpụrụ" na-atọ ụtọ, bp 77ºC.

Ethyl acetate nwere ọtụtụ ojiji, dị ka mkpụrụ osisi artificial na ihe na-esi ísì ụtọ, ụtọ artificial maka confectionery, ice cream na achịcha, dị ka ihe mgbaze n'ọtụtụ ngwa (gụnyere decaffeinating tii na kọfị) maka varnishes na agba (ntu varnish remover), na maka imeputa ink na-esi ísì ụtọ.

Ngwa:

A na-eji ethyl acetate eme ihe n'ụzọ bụ isi dị ka ihe mgbaze na ihe mgbaze, na-amasị ya n'ihi ọnụ ala ya dị ala, obere nsị, na isi ísì ụtọ. Dịka ọmụmaatụ, a na-ejikarị ya ihicha bọọdụ sekit na ụfọdụ ihe na-ewepụ ntu ntu (acetone na acetonitrile na-ejikwa). A na-eji ihe mgbaze a na-ekpochapụ agwa kọfị na akwụkwọ tii. A na-ejikwa ya na-ese ihe dị ka ihe na-arụ ọrụ ma ọ bụ ihe siri ike. Na senti, ọ na-ekupụ ngwa ngwa, na-ahapụ naanị ísì ísì na akpụkpọ ahụ.
3 – 1 – Ojiji ụlọ nyocha
N'ime ụlọ nyocha, ngwakọta nwere ethyl acetate na-ejikarị na kọlụm chromatography na mmịpụta. A naghị ahọrọ ethyl acetate dị ka ihe mgbaze mmeghachi omume n'ihi na ọ na-adịkarị mfe hydrolysis na trans esterification.
3 – 2 – Ime na mmanya
Ethyl acetate bụ ester kachasị na mmanya, ebe ọ bụ ngwaahịa nke organic acid na-agbanwe agbanwe - acetic acid, na mmanya ethyl na-emepụta n'oge ịgba ụka. Ihe na-esi ísì ụtọ nke ethyl acetate na-apụta ìhè na mmanya ndị na-eto eto ma na-enye aka n'echiche zuru ezu nke "mkpụrụ osisi" na mmanya.
3 – 3 – Onye na-ahụ maka igbu mmadụ
Na ngalaba nke entomology, ethyl acetate bụ asphyxiant dị irè maka iji na-achịkọta ụmụ ahụhụ na ọmụmụ ihe. N'ime ite igbu egbu nke eboro ethyl acetate, vapors ga-egbu ụmụ ahụhụ anakọtara (na-abụkarị okenye) ngwa ngwa n'emebighị ya. N'ihi na ọ bụghị hygroscopic, ethyl acetate na-emekwa ka ụmụ ahụhụ dị nro nke ọma iji kwe ka ịrị elu kwesịrị ekwesị maka nchịkọta.