Qhov sib txawv tseem ceeb ntawm methyl acetate thiab ethyl acetate yog methyl acetate muaj ib pawg methyl txuas rau pawg acetate whereas ethyl acetate muaj ib pawg ethyl txuas rau pawg acetate.
Acetate yog anion muab los ntawm acetic acid (tshem tawm ntawm hydrogen atom hauv pawg carboxylic acid tsim cov acetate anion). Ob qho tib si Methyl acetate thiab ethyl acetate yog cov organic sib txuas nrog cov tshuaj lom neeg thiab lub cev muaj zog.
Methyl Acetate yog dab tsi?
Methyl acetate yog cov organic compound uas muaj cov tshuaj CH 3COOCH3Ntawm no, pawg acetate (-COOCH3) yog txuas rau pawg methyl (-CH3). Cov molar loj ntawm cov compound yog 74 g / mol. Nws yog categorized li carboxylate ester txij li thaum methyl acetate yog tsim los ntawm kev sib cuam tshuam ntawm pawg carboxylate thiab ib pawg methyl, tsim ib daim ntawv cog lus ester.
Daim duab 1: Methyl Acetate
Nyob rau hauv chav tsev kub, methyl acetate yog cov kua tsis muaj xim uas muaj ntxhiab tsw. Nws kuj muaj ib tug fruity saj. Lub melting point ntawm no compound yog -98 ° C thaum lub boiling point yog 56.9 ° C. Cov tshuaj no yog tshuaj lom me ntsis. Nws kuj yog cov kua ua kua thiab muaj qee qhov siv los ua cov kuab tshuaj. Tsis tas li ntawd, nws yog ib qho tsis muaj zog polar thiab lipophilic hnyav. Nyob rau hauv chav tsev kub, methyl acetate yog dej soluble tsis zoo. Tab sis ntawm qhov kub siab dua, lub compound muaj cov dej solubility siab. Tsis tas li ntawd, Methyl acetate vapors hnyav dua li huab cua ib txwm.
YEthyl Acetate yog dab tsi?
Ethyl acetate yog cov organic compound uas muaj cov tshuaj CH3CH2COOCH3Cov molar loj ntawm cov tshuaj no yog 88 g / mol. Nws yog categorized li carboxylate ester txij li thaum ethyl acetate yog tsim los ntawm kev sib cuam tshuam ntawm pawg carboxylate thiab ib pawg ethyl, tsim ib daim ntawv cog lus ester. Tsis tas li ntawd, Ethyl acetate yog ester ntawm ethanol thiab acetic acid.
Daim duab 2: Ethyl Acetate
Nyob rau hauv chav tsev kub, ethyl acetate yog cov kua xim tsis muaj xim nrog cov ntxhiab tsw qab. Cov kua no kuj tau siv dav los ua cov kuab tshuaj. Ethyl acetate vapor yog hnyav dua li huab cua. Muaj ntau yam kev siv rau cov kua no vim nws cov nqi qis, tsis muaj tshuaj lom, thiab tsw qab ntxiag.
Lub melting point ntawm ethyl acetate yog -83.6 ° C thaum lub boiling point yog 77 ° C. Nws yog ib tug flammable kua thiab yog ib qho irritant. Ntxiv mus, hydrolysis ntawm Ethyl acetate ua rau acetic acid thiab ethanol. Qhov no hydrolysis yog ob-kauj ruam txheej txheem uas tshwm sim nyob rau hauv lub xub ntiag ntawm ib tug muaj zog puag xws li sodium hydroxide (NaOH). Thawj kauj ruam suav nrog kev tsim ethanol thiab sodium acetate whereas theem thib ob cuam tshuam nrog kev hloov pauv ntawm sodium acetate rau hauv acetic acid.
Dab tsi zoo sib xws ntawm Methyl Acetate thiab Ethyl Acetate?
- Methyl Acetate thiab Ethyl Acetate yog cov kua tsis muaj xim ntawm chav tsev kub nrog cov txiv hmab txiv ntoo, tsw qab ntxiag.
- Ob qho tib si Methyl Acetate thiab Ethyl Acetate yog cov nplaim taws.
- Ob lub tebchaw yog carboxylate esters.
- Methyl Acetate thiab Ethyl Acetate yog siv los ua cov kuab tshuaj.
Qhov txawv ntawm Methyl Acetate thiab Ethyl Acetate yog dab tsi?
Methyl Acetate vs Ethyl Acetate |
|
| Methyl acetate yog cov organic compound uas muaj cov tshuaj CH 3COOCH3. | Ethyl acetate yog cov organic compound uas muaj cov tshuaj CH3CH2COOCH3. |
| Molar Mass | |
| Cov molar loj ntawm methyl acetate yog 74 g / mol. | Cov molar loj ntawm ethyl acetate yog 88 g / mol. |
| Lub melting point ntawm methyl acetate yog -98 ° C thaum lub boiling point yog 56.9 ° C. | Lub melting point ntawm ethyl acetate yog -83.6 ° C thaum lub boiling point yog 77 ° C. |
| Txoj kev phem | |
| Methyl acetate yog tshuaj lom me ntsis. | Ethyl acetate yog tshuaj lom tsawg dua Methyl acetate. |
| Siv ua kuab tshuaj | |
| Methyl acetate tsuas yog siv qee zaus los ua cov kuab tshuaj. | Ethyl acetate yog siv dav dua los ua cov kuab tshuaj. |
Summary – Methyl Acetate vs Ethyl Acetate
Ob leeg Methyl acetate thiab ethyl acetate yog cov organic sib txuas nrog cov tshuaj lom neeg thiab lub cev muaj zog. Qhov sib txawv tseem ceeb ntawm methyl acetate thiab ethyl acetate yog methyl acetate muaj ib pawg methyl txuas rau pawg acetate whereas ethyl acetate muaj ib pawg ethyl txuas nrog acetate pawg.
