Ethyl Acetate Boiling Point Analysis: Basic Properties thiab Influencing Factors
Ethyl Acetate (EA) yog ib qho organic compound nrog ntau yam kev siv. Nws yog feem ntau siv los ua cov kuab tshuaj, flavoring thiab zaub mov additive, thiab nyiam rau nws cov volatility thiab txheeb ze kev nyab xeeb. Nkag siab txog cov yam ntxwv tseem ceeb thiab cov yam ntxwv cuam tshuam rau qhov kub siab ntawm ethyl acetate yog qhov tseem ceeb rau nws siv hauv kev tsim khoom.
Basic Physical Properties of Ethyl Acetate
Ethyl acetate yog cov kua tsis muaj xim nrog cov txiv hmab txiv ntoo zoo li ntxhiab tsw. Nws muaj cov mis molecular C₄H₈O₂ thiab molecular hnyav ntawm 88.11 g / mol.Lub boiling point ntawm ethyl acetate yog 77.1 ° C (350.2 K) atmospheric siab. Qhov kub kub no ua rau nws yooj yim rau evaporate ntawm chav tsev kub, ua rau nws haum rau siv nyob rau hauv ntau yam kev thov scenarios uas yuav tsum tau ceev evaporation.
Cov yam ntxwv cuam tshuam rau qhov kub kub ntawm ethyl acetate

Cov nyhuv ntawm sab nraud siab:

Lub boiling point ntawm ethyl acetate yog ze ze rau ambient siab. Ntawm tus qauv atmospheric siab, lub boiling point ntawm ethyl acetate yog 77.1 ° C. Txawm li cas los xij, thaum lub siab txo qis, qhov kub ntawm qhov taw tes txo qis raws li. Cov cuab yeej no tseem ceeb heev hauv cov ntawv thov kev lag luam, tshwj xeeb tshaj yog nyob rau hauv lub tshuab nqus tsev distillation, qhov kub ntawm ethyl acetate tuaj yeem txo qis, yog li cuam tshuam rau kev ua haujlwm ntawm kev sib cais thiab kev ua kom huv.

Cov nyhuv ntawm purity thiab sib tov:

Lub purity ntawm ethyl acetate kuj muaj qhov cuam tshuam rau nws qhov kub thiab txias. High purity ethyl acetate muaj qhov kub siab ruaj khov uas yuav hloov tau thaum nws tov nrog lwm cov kuab tshuaj los yog tshuaj. Qhov tshwm sim ntawm azeotropy ntawm cov khoom sib tov yog ib qho piv txwv, nyob rau hauv qee qhov kev faib ua feem ntawm ethyl acetate tov nrog dej tsim ib qho kev sib xyaw nrog ib qho tshwj xeeb azeotropic point, ua rau cov sib tov evaporate ua ke ntawm qhov kub.

Intermolecular kev sib cuam tshuam:

Intermolecular kev sib cuam tshuam, xws li hydrogen bonding los yog van der Waals rog, kuj tsis muaj zog hauv ethyl acetate tab sis tseem muaj kev hloov maj mam ntawm nws qhov kub. Vim lub ester pawg qauv nyob rau hauv ethyl acetate molecule, lub intermolecular van der Waals rog kuj me me, uas ua rau lub boiling point. Nyob rau hauv sib piv, cov tshuaj uas muaj zog intermolecular kev sib tshuam feem ntau muaj cov ntsiab lus kub dua.

Boiling point ntawm ethyl acetate hauv kev lag luam

Ethyl acetate muaj qhov kub ntawm 77.1 ° C, yog ib qho cuab yeej uas tau ua rau nws siv dav hauv kev lag luam tshuaj, tshwj xeeb hauv kev tsim cov xim, coatings thiab adhesives. Nws qhov qis qis qis tso cai rau ethyl acetate evaporate sai, muab cov solubility zoo thiab yooj yim ntawm kev tuav. Hauv kev lag luam kws tshuaj, ethyl acetate feem ntau yog siv rau kev tshem tawm thiab ntxuav cov organic tebchaw, vim nws qhov kub nruab nrab tso cai rau kev sib cais ntawm cov hom phiaj sib txuas thiab impurities.

Los xaus

Nkag siab txog qhov kub ntawm ethyl acetate thiab cov yam ntxwv uas cuam tshuam nws yog qhov tseem ceeb rau kev tsim khoom thiab kev siv hauv kev lag luam tshuaj. Los ntawm kev tswj cov ambient siab, tswj cov khoom purity, thiab coj mus rau hauv tus account intermolecular kev sib cuam tshuam, cov efficiency ntawm ethyl acetate yuav ua tau zoo optimised. Qhov tseeb tias ethyl acetate muaj qhov kub ntawm 77.1 ° C ua rau nws yog ib qho tseem ceeb hnyav thiab nruab nrab hauv ntau daim ntawv thov kev lag luam.