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Igoa Oloa：Ethyl acetate

fa'asologa mole:C4H8O2

Numera CAS:141-78-6

Fua mole mole oloa：

Meatotino tau vailaau:

Ethyl acetate (fa'atulagaga o lo'o fa'aalia i luga) o le ester sili ona masani i le tele o tamaiti a'oga kemisi ma atonu o le ester ma le lautele lautele o fa'aoga. O Esters e fa'avaeina fa'avae mai le carboxylic acids e ala i le suia o le hydrogen acidic e se vaega alkyl po'o le aryl. Ethyl acetate lava ia o se vai e leai ni lanu i le vevela o le potu ma se manogi manaia "fua", bp 77°C.

E tele aogā o le Ethyl acetate, e pei o fuala'au fuala'au 'aina ma mea e fa'aleleia ai le manogi, mea'ai fa'apitoa mo mea fa'afefete, aisakulimi ma keke, e fai ma solvent i le tele o fa'aoga (e aofia ai le fa'afefeteina o lauti ma kofe) mo varnishes ma vali (ave'ese fao varnish), ma mo. o le gaosiga o vaitusi lolomi ma mea manogi.

Talosaga:

O le Ethyl acetate e fa'aaoga muamua e avea o se solvent ma le fa'afefeteina, e fiafia i ai ona o lona tau maualalo, maualalo oona, ma le manogi lelei. Mo se faʻataʻitaʻiga, e masani ona faʻaaogaina e faʻamamā ai laupapa faʻasalalau ma i nisi o fao varnish aveese (e faʻaaogaina foi le acetone ma le acetonitrile). O fatu kofe ma lau lauti o lo'o fa'afefeteina i lenei solvent. E fa'aaogaina fo'i i vali e fai ma fa'agaioiga po'o fa'ama'a'a. I mea manogi, e vave ona alu, ae na o le manogi o le manogi i luga o le paʻu.
3 – 1 – Fa'aoga a le fale su'esu'e
I totonu o fale su'esu'e, o fa'afefiloi o lo'o i ai le ethyl acetate e masani ona fa'aogaina ile koluma chromatography ma fa'aputuga. E seasea filifilia le Ethyl acetate e fai ma vaifofo tali aua e faigofie ile hydrolysis ma trans esterification.
3 – 2 – E tutupu i uaina
O le Ethyl acetate o le ester sili ona taatele i le uaina, o se mea e maua mai i le vailaʻau faʻasolosolo masani - acetic acid, ma le ethyl alcohol e gaosia i le taimi o le faʻafefe. O le manogi o le ethyl acetate e sili ona manino i uaina laiti ma fesoasoani i le vaaiga lautele o le "fua" i le uaina.
3 – 3 – So'o fasioti tagata
I le matata o le entomology, o le ethyl acetate o se faʻamaʻi aoga mo le faʻaogaina i le aoina ma suʻesuʻega iniseti. I totonu o se fagu fasioti tagata ua molia i le ethyl acetate, o ausa o le a faʻaumatia vave le iniseti aoina (masani tagata matua) e aunoa ma le faʻaumatia. Ona e le o le hygroscopic, o le ethyl acetate e faʻamalu ai le iniseti e faʻataga ai le faʻapipiʻiina talafeagai mo se aoina.