Magaca Alaabta：Ethyl acetate

Qaab molecular:C4H8O2

CAS Maya:141-78-6

Qaab dhismeedka molecular Product：

Guryaha Kiimikada:

Ethyl acetate (qaab-dhismeedka kor lagu muujiyey) waa ester-ka ugu caansan ee arday badan oo kimistari ah iyo suurtogalnimada esterka leh isticmaalka ugu ballaaran.Esters qaab dhismeed ahaan waxaa laga soo qaatay asiidh-carbosilic iyadoo lagu beddelayo hydrogen-ka acidic by alkyl ama group aryl.Ethyl acetate lafteedu waa dareere aan midab lahayn heerkulka qolka oo leh ur "miro" wacan, bp 77 ° C.

Ethyl acetate waxay leedahay adeegsiyo badan, sida nuxurka miraha macmalka ah iyo udgoonka, dhadhanka macmacaanka ah, jalaatada iyo keega, sida dareeraha codsiyo badan (oo ay ku jiraan shaaha decaffeinating iyo kafeega) rinjiyada iyo rinjiyada (cidiyihii varnish), iyo samaynta khadadka daabacaadda iyo cadarka.

Codsiga:

Ethyl acetate waxaa loo isticmaalaa ugu horrayn sida dareere iyo dareere, iyada oo la jecel yahay sababtoo ah qiimaha hoose, sunta hoose, iyo ur la aqbali karo.Tusaale ahaan, waxaa caadi ahaan loo isticmaalaa in lagu nadiifiyo looxyada wareegga iyo qaar ka mid ah kuwa tirtiraya ciddiyaha (acetone iyo acetonitrile ayaa sidoo kale la isticmaalaa).Digirta kafeega iyo caleenta shaaha ayaa laga saaray dareerahaan.Waxa kale oo loo isticmaalaa rinji sida firfircooniye ama qallafsane.Barfuunnada, si dhakhso ah ayuu u uumi baxaa, isaga oo ku reebaya uun urta cadarka maqaarka.
3 - 1 - Isticmaalka shaybaadhka
Shaybaadhka, isku dhafka ay ku jiraan ethyl acetate ayaa caadi ahaan loo isticmaalaa chromatography tiirka iyo soo saarista.Ethyl acetate marar dhif ah ayaa loo doortaa sida dareeraha falcelinta sababtoo ah waxay u nugul tahay hydrolysis iyo trans esterification.
3 - 2 - Dhacdooyinka khamriga
Ethyl acetate waa ester-ka ugu caansan khamriga, isagoo ah sheyga ugu badan ee aashitada organic kacsan - acetic acid, iyo khamriga ethyl ee la soo saaro inta lagu jiro halsano.Udgoonka ethyl acetate wuxuu aad ugu muuqdaa khamriga da'da yar wuxuuna gacan ka geystaa aragtida guud ee "miro" ee khamriga.
3 - 3 - Wakiilka dilaaga ah
Dhanka cilmiga entomology-ga, ethyl acetate waa asphyxiant wax ku ool ah oo loo isticmaalo ururinta iyo daraasadda cayayaanka.Weelka wax lagu dilo ee lagu darey ethyl acetate, uumiga ayaa si degdeg ah u dili doona xasharaadka la ururiyey (sida caadiga ah dadka waaweyn) iyaga oo aan baabi'in.Sababtoo ah ma aha hygroscopic, ethyl acetate sidoo kale waxay xajisaa cayayaanka ku filan si ay u oggolaato kor u qaadista saxda ah ee ku habboon ururinta.