Txheej txheem cej luam
CAS No.141-78-6 Ethyl acetate(cov ntawv luv ETAC / EA / EtOAc, IUPAC ethyl ethanoate) yog qhov qis -toxicity, ceev-evaporating carboxylic ester hnyav nrog cov mis molecular C₄H₈O₂. Nws yog cov txiv hmab txiv ntoo tsis muaj xim -scented kua, dav lees paub tias yog ib qho ntawm ntau yam eco- tus phooj ywg muaj kuab tshuaj, siv thoob plaws txheej txheej, nplaum, luam ntawv, ua zaub mov, tshuaj, semiconductors thiab lithium- ion roj teeb tsim.
Ethyl Acetate yog dab tsi?
Ethyl acetate (CAS No. 141-78-6), tseem hu ua ethyl ethanoate los yog abbreviated li EA los yog EtOAc, yog ib tug tsawg - toxicity, ceev -evaporating organic ester hnyav nrog cov mis molecular C₄H₈O₂. Nws yog cov kua ntshiab, tsis muaj xim, nrog cov yam ntxwv ntawm cov txiv hmab txiv ntoo tsw thiab tau dav siv thoob plaws hauv cov txheej txheem, cov nplaum, luam ntawv, tshuaj, khoom noj khoom haus, kev tsim khoom siv hluav taws xob thiab kev siv hauv chav kuaj.
Ua tsaug rau nws cov kuab tshuaj zoo heev, evaporation sai, thiab cov tshuaj toxicity tsawg piv nrog ntau cov kuab tshuaj tsw qab, ethyl acetate yog ib qho ntawm lub ntiaj teb feem ntau siv cov kuab tshuaj.
- Yam khoom:Ethyl Acetate (EA) CAS 141-78-6
Cov ntaub ntawv yooj yim
| Tshuaj npe | Ethyl Acetate |
| IUPAC npe | Ethyl Ethanoate |
| CAS Nr | 141-78-6 |
| EINECS Number | 205-500-4 |
| Molecular Formula | C₄H₈O₂ |
| Molecular Luj | 88,11 g / mol |
| Synonyms | EA, EtOAc, Acetic Acid Ethyl Ester |
- CAS Registry Number 141-78-6 yog muab los ntawm Chemical Abstracts Service (CAS) thiab yog siv thoob ntiaj teb los ntawm cov koom haum tswj hwm thoob ntiaj teb, suav nrog EPA, ECHA (REACH), FDA thiab ntau lub teb chaws cov khoom muag tshuaj.
Physical thiab Chemical Properties
| Qhov tshwm sim | Ntshiab, xim tsis muaj kua |
| tsw | Qab zib, fruity |
| Boiling Point | 77.1 degree |
| Melting Point | -83.6 degree |
| Ceev (20 degree) | Kwv yees li 0.90 g / cm³ |
| Flash Point | -4 degree |
| Dej Solubility | Kwv yees li 80 g / L (20-25 degree) |
| Vapor Density | 3.0 (Air=1) |
- Ethyl acetate yog miscible nrog feem ntau cov organic solvents, xws li cawv, ketones, ethers thiab aromatic hydrocarbons. Nws dissolves nitrocellulose, acrylic resins, polyurethane resins thiab ntau lwm yam polymers siv nyob rau hauv industrial formulations.
- Nyob rau hauv ib txwm cia tej yam kev mob nws tseem chemically ruaj khov. Txawm li cas los xij, nws tuaj yeem maj mam hydrolyze nyob rau hauv lub xub ntiag ntawm dej, tshwj xeeb tshaj yog nyob rau hauv acidic los yog alkaline tej yam kev mob, ua ethanol thiab acetic acid.
Ethyl Acetate Ua li cas?
Kev tsim khoom lag luam feem ntau siv ob txoj kev lag luam:
1. Fischer Esterification
Acetic acid reacts nrog ethanol nyob rau hauv lub xub ntiag ntawm ib tug acid catalyst los tsim ethyl acetate thiab dej. Qhov no yog txoj kev tsim khoom siv dav tshaj plaws vim nws cov cuab yeej paub tab thiab tus nqi ua haujlwm.
2. Tishchenko Reaction
Ob lub molecules ntawm acetaldehyde tau hloov pauv ncaj qha rau hauv ethyl acetate siv ib qho txhuas alkoxide catalyst. Cov txheej txheem no muaj kev hloov pauv tau zoo thiab tsawg dua los ntawm - cov khoom raws li cov khoom tsim nyog.
Dab tsi yog Cov Ntawv Thov Kev Lag Luam ntawm Ethyl acetate hnyav?
1. Xim thiab Txheej
Ethyl acetate (CAS 141-78-6) yog dav siv nyob rau hauv cov txheej txheem, xws li tsheb refinish, industrial tu, ntoo coatings, hlau coatings thiab tiv thaiv tiav. Nws ceev evaporation tus nqi, muaj zog solvency rau acrylic, nitrocellulose thiab polyurethane resins, thiab tsawg residue profile pab formulators txhim kho ndlwg, leveling thiab zaj duab xis clarity thaum txo kom qhuav lub sij hawm thiab nto defects. Rau cov tuam txhab nrhiav kev sib npaug ntawm daim ntawv thov ceev thiab ua tiav zoo, ethyl acetate feem ntau raug xaiv los ua ib qho tseem ceeb sib xyaw hnyav hauv txheej txheej txheej.
2. Adhesives thiab Sealants
Nyob rau hauv cov tshuaj nplaum thiab sealant formulations, ethyl acetate ua haujlwm raws li ceev ceev -evaporating carrier hnyav rau polyurethane, acrylic, yas thiab roj hmab-raws li systems. Nws txhawb kev tswj viscosity hloov thaum lub sij hawm thov thiab txhawb lub sij hawm sai sai tom qab txheej los yog kev sib txuas. Qhov no ua rau nws muaj txiaj ntsig zoo hauv kev ntim khoom, khau, laminates, daim ntawv lo thiab daim ntawv thov kev sib dhos dav dav uas cov neeg siv khoom xav tau luv luv luv, daim ntawv thov huv thiab txhim khu kev qha nyiaj txiag.
3. Printing Inks
Flexographic, gravure thiab ib co tshuaj ntsuam luam ntawv inks siv ethyl acetate vim nws dries sai sai, dissolves ntau binder systems thiab tawm tsawg kawg nkaus residue ntawm cov luam substrate. Nws cov evaporation profile pab cov tshuab luam ntawv tswj xyuas cov duab ntse, txhim kho xim zoo ib yam thiab siab - nrawm nrawm. Hauv kev ntim khoom thiab daim ntawv lo luam ntawv, ethyl acetate yog qhov tshwj xeeb tshaj yog muaj txiaj ntsig thaum cov neeg siv khoom xav tau ceev ceev number case, txo qhov thaiv thiab txo cov kuab tshuaj tawm thaum lub sijhawm ziab tunnels.
4. Kev tsim tshuaj
Ethyl acetate hnyav feem ntau yog siv rau hauv kev ua tshuaj ua cov kuab tshuaj extraction, crystallization nruab nrab thiab purification pab rau cov khoom xyaw tshuaj nquag (APIs) thiab intermediates. Nws raug cais raws li ICH Class 3 residual hnyav, uas txhais tau hais tias nws muaj kev txhawj xeeb toxicological tsawg thaum siv nyob rau hauv kev txwv. Vim tias nws muab cov kev daws teeb meem zoo nrog kev lees paub zoo, ethyl acetate feem ntau xaiv los ntawm cov kws tsim tshuaj nrhiav kev ua kom huv, tshem tawm cov kuab tshuaj yooj yim dua thiab ua raws li cov qauv zoo thoob ntiaj teb.
5. Kev ua zaub mov thiab tsw
Hauv cov ntawv thov zaub mov thiab tsw, ethyl acetate yog siv nyob rau hauv kev tswj nruj nruj rau kev tshem tawm tsw, decaffeination thiab cov khoom ua kom huv. US FDA lees paub ethyl acetate raws li Kev Pom Zoo Raws Li Kev Nyab Xeeb (GRAS) rau kev siv tshwj xeeb, thiab nws kuj tseem raug xa mus rau hauv cov zaub mov- ua cov kev cai hauv ntau lub khw. Rau cov neeg siv khoom hauv cov khoom noj thiab dej haus, qhov no ua rau ethyl acetate xaiv qhov ua tau zoo thaum lawv xav tau cov kuab tshuaj tshem tawm kom zoo uas tuaj yeem tshem tawm tau yooj yim thiab siv raws li cov khoom noj uas siv tau - qib yuav tsum tau ua.
6. Electronics thiab Precision Cleaning
Siab -purity ethyl acetateyog siv los ntxuav cov khoom siv hluav taws xob, cov ntawv luam tawm hauv Circuit Court, qhov chaw kho qhov muag thiab cov cuab yeej precision qhov twg kom qhuav sai thiab tsis tshua muaj qhov tseem ceeb. Nws pab tshem cov roj, flux residue thiab tej yam kab mob organic yam tsis tau tawm hauv cov yeeb yaj kiab hnyav lossis ncua sij hawm ziab.
Kev nyab xeeb thiab khaws cia ntawm Ethyl acetate chemical
CAS No.141-78-6 Ethyl acetateyog cais raws li GHS Qeb 2 Cov kua nplaum uas muaj nplaim taws ntau heev.
Cov xwm txheej tseem ceeb muaj xws li:
- Ua kua thiab vapor heev
- Qhov muag khaus
- Drowsiness los yog kiv taub hau tom qab ntev inhalation ntawm high vapor concentrations
Raws li OSHA, qhov tso cai raug txwv (PEL) yog 400 ppm (8-teev TWA). Kev ua pa txaus yuav tsum tau muab txhua lub sijhawm thaum siv kev lag luam.
Khaws cov tshuaj ethyl acetate chemical kua rau hauv cov thawv kaw nruj nreem rau hauv qhov txias, qhuav thiab zoo- qhov cua qhov chaw kom deb ntawm tshav kub, sparks, qhib nplaim taws thiab muaj zog oxidizing agents. Cov pa roj carbon steel, stainless hlau, txhuas thiab cov kuab tshuaj sib xws - cov thawv yas tiv taus xws li HDPE feem ntau yog siv rau kev khaws cia thiab kev thauj mus los.
- Related Article:Puas yog Ethyl Acetate Toxic rau tib neeg? Phau Ntawv Qhia Txog Kev Nyab Xeeb thiab Kev Nyab Xeeb
Ethyl Acetate/EA Solvent vs
| Parameter | Ethyl Acetate | MEK | Toluene | Acetone |
|---|---|---|---|---|
| Kub Point (degree) | 77.1 | 79.6 | 110.6 | 56.1 |
| Tus txheeb ze Evaporation Rate * | 4.1 | 3.8 | 2.0 | 5.6 |
| Dej Solubility (20-25 degree) | ~80 g/L | ~275 g/L | ~0.5 g/L | Miscible |
| Flash Point (degree) | -4 | -9 | 4 | -20 |
| ICH Residual Solvent Class | Chav kawm 3 | Chav kawm 3 | Chav kawm 2 | Chav kawm 3 |
- Tus txheeb ze evaporation tus nqi yog feem ntau qhia siv n-butyl acetate=1 raws li kev siv.
Ethyl acetate hnyavFeem ntau xaiv thaum koj xav tau qhov sib npaug ntawm cov kuab tshuaj profile: muaj zog solvency, nruab nrab kom qhuav ceev, kuj tsis tshua muaj toxicity, thiab dav kev cai txais.
Cov lus nug nquag nug (FAQs)
Q1: Tus lej CAS ntawm ethyl acetate yog dab tsi?
A: CAS Registry Number of ethyl acetate yog 141-78-6. Tsim los ntawm Chemical Abstracts Service (CAS), tus cim tshwj xeeb no tau siv dav los ntawm cov tuam txhab, cov chaw sim thiab cov koom haum tswj hwm thoob ntiaj teb rau kev txheeb xyuas tshuaj. Cov mis mos molecular yog C₄H₈O₂, thiab nws lub npe IUPAC yog ethyl ethanoate.
Q2: Puas yog ethyl acetate zoo ib yam li acetone?
A: Tsis yog. Ethyl acetate yog ester, C₄H₈O₂, CAS 141-78-6 thiab acetone yog ketone, C₃H₆O, CAS 67-64-1, lawv yog cov tshuaj sib txawv nrog cov khoom sib txawv ntawm lub cev thiab tshuaj lom neeg. Ethyl acetate muaj cov ntxhiab tsw tsw qab, tsis muaj dej solubility thiab kev daws teeb meem zoo heev rau nitrocellulose, acrylic thiab ntau lwm yam resins, thaum acetone evaporates sai dua thiab tag nrho miscible nrog dej.
Q3: Puas yog ethyl acetate muaj kev nyab xeeb rau kev sib cuag zaub mov thiab kev ua zaub mov?
A: Yog. Ethyl acetate (CAS 141-78-6) yog teev los ntawm US FDA raws li Kev Pom Zoo Raws Li Kev Nyab Xeeb (GRAS) rau cov ntawv teev npe hais txog zaub mov thiab raug tso cai siv raws li cov cai tswj kev noj qab haus huv, suav nrog Food Chemicals Codex (FCC) thiab Tuam Tshoj tus GB 2760 tus qauv. Nws yog dav siv nyob rau hauv flavour extraction, kas fes decaffeination thiab cov khoom noj khoom noj ua nyob rau hauv kev tswj kev tsim khoom.
Q4: Dab tsi yog qhov txawv ntawm qib kev lag luam thiab ACS reagent qib ethyl acetate?
A: Ob qib feem ntau muaj qhov purity yam tsawg kawg nkaus ntawm 99.5%, tab sis ACS reagent qib siv ntau qhov txwv tsis pub muaj dej, cov hlau hnyav thiab cov seem tom qab evaporation. Cov qib kev lag luam feem ntau yog siv rau hauv cov txheej txheej, cov nplaum thiab cov khoom siv dav dav, thaum ACS reagent qib yog nyiam rau kev siv tshuaj, tshuaj ntsuam xyuas thiab lwm yam txheej txheem siab - purity qhov twg cov kab impurities tuaj yeem cuam tshuam cov khoom zoo.
Q5: Dab tsi niaj hnub kev lag luam siv siab -purity ethyl acetate?
A: High-purity ethyl acetate chemical yog nce siv nyob rau hauv kev lag luam siab heev, xws li semiconductor tu thiab photoresist ua, tshuaj ntau lawm, precision kuaj kuaj, hluav taws xob tivthaiv tu thiab tshwj xeeb tshuaj synthesis. Cov ntawv thov no xav tau cov kuab tshuaj purity zoo ib yam, tsis tshua muaj residue thiab txhim khu kev qha zoo los txhawb cov txheej txheem tsim khoom.
Q6: Puas yog ethyl acetate flammable?
A: Yog. Nws muaj qhov taw tes ntawm −4℃thiab raug cais raws li GHS Qeb 2 Cov kua nplaum nplaum nplaum heev. Vim tias nws cov vapors hnyav dua li huab cua, lawv tuaj yeem sib sau ua ke hauv qhov chaw qis -dej thiab tuaj yeem tawg yog tias lawv ntsib qhov hluav taws kub. Kev ua pa kom raug, kev siv cov khoom siv hauv av thiab tshem tawm cov khoom siv hluav taws xob yog qhov tseem ceeb thaum khaws cia, tuav thiab thauj mus los.
Xaus
Ethyl acetate (CAS 141-78-}6) yog cov tshuaj lom neeg tsawg, ceev-evaporating ester hnyav nrog cov ntxhiab tsw qab. Nws dissolves ntau yam resins thiab ua raws li kev cai thoob ntiaj teb kev lag luam.
EA hnyav yog dav siv nyob rau hauv coatings, adhesives, luam ntawv inks, tshuaj pleev ib ce, zaub mov extraction, tshuaj synthesis, hluav taws xob tu, semiconductors thiab lithium roj teeb manufacturing. Cov qib purity sib txawv sib piv cov khoom siv dav dav thiab siab -precision industrial scenarios.
Ntim rau chemical solvents
Txog Peb
Gneebioyog tus kws tshaj lij thoob ntiaj teb kev lag luam tshuaj tshwj xeeb tshwj xeeb hauv cov kuab tshuaj ester, cov khoom siv hluavtaws thiab cov khoom siv zoo, nrog rau lub sijhawm ntev - koom tes nrog cov chaw tsim khoom thiab ua tiav cov saw hlau npog Asia, Europe, Middle East thiab North America. Peb cov khoom tseem ceeb ntawm cov khoom lag luam ntawm ethyl acetate CAS 141-78-6, nrog rau butyl acetate, isopropanol thiab acetone, muab kev lag luam zoo ib yam -qib thiab high-purity ACS-qib cov khoom rau txheej, tshuaj, hluav taws xob, khoom noj khoom haus thiab kev tsim hluav taws xob tshiab.
Tshaj li cov khoom lag luam, peb muab cov neeg siv khoom nrog cov kev pabcuam txhawb nqa nrog rau cov qauv purity customized, COA ntawv pov thawj, kev ntim khoom nyab xeeb & kev thauj mus los, kev taw qhia kev cia thiab kev sib tham hnyav.
