Ethyl 3-Mercaptopropionate (CAS # 5466-6-8)

Chemical Property:

沸点: 75-76 ° C / 10 mmHg (lit.)

密度: 1.059 g / mL ntawm 20 ° C (lit.)

折射率: n20/D 1.457 (lit.)

闪点: 72 ° C

形态: Ua kua

酸度系数(pKa): 9.72 ± 0.10 (Kev kwv yees)

颜色: Ntshiab xim tsis muaj xim rau daj, tuaj yeem tsaus ntuj thaum khaws cia

气味 (Ntsuab): ntawm 0.10% hauv propylene glycol. tsiaj foxy fruity grape skunky

香型: sulfurous

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Ethyl 3-Mercaptopropionate (CAS # 5466-6-8) Taw qhia

Lub cev:
Cov tsos mob: Feem ntau tsis muaj xim rau lub teeb daj pob tshab kua nrog cov ntxhiab tsw tshwj xeeb.
Boiling Point: Feem ntau ntawm 190 - 192 ° C (ntawm tus qauv atmospheric siab), qhov boiling point range yuav txawv me ntsis nyob ntawm qhov kev sim thiab purity.
Qhov ntom ntom: Cov txheeb ze ntom ntom yog kwv yees li 1.07 (dej = 1), uas txhais tau hais tias nws hnyav dua li dej me ntsis thiab thaum lub sij hawm cia thiab siv, nws yuav nyob rau hauv qis txheej yog tov nrog dej.
Solubility: me ntsis soluble nyob rau hauv dej, tab sis miscible nrog feem ntau cov organic solvents xws li ethanol, ether, acetone, thiab lwm yam, uas ua rau nws lug koom nyob rau hauv cov tshuaj tiv thaiv ntawm ntau yam hnyav systems nyob rau hauv cov organic synthesis tshua.
Chemical Properties:
Functional group reactivity: Cov pab pawg sulfhydryl (-SH) nyob rau hauv cov molecule muaj zog reactivity thiab yog qhov chaw nquag ntawm ntau cov tshuaj tiv thaiv. Nws tuaj yeem raug cov tshuaj tiv thaiv condensation nrog carbonyl tebchaw xws li aldehydes thiab ketones los tsim thioether tebchaw; Nws tseem tuaj yeem hloov pauv cov tshuaj tiv thaiv nrog halogenated hydrocarbons los tsim cov carbon-sulfur bonds tshiab, uas tuaj yeem siv los tsim cov txheej txheem organic molecular.
Kev ruaj ntseg: Nws yog qhov ruaj khov ntawm chav tsev kub thiab siab, tab sis nyob rau hauv cov xwm txheej ntawm lub teeb, qhov kub thiab txias los yog muaj cov oxidants muaj zog, cov sulfhydryl pawg yuav raug oxidized, uas ua rau muaj kev hloov pauv ntawm cov tshuaj lom neeg ntawm cov tebchaw, yog li lawv yuav tsum tau ua. khaws cia thiab siv raws li qhov tsim nyog, thiab nws feem ntau pom zoo kom khaws cia rau hauv qhov chaw txias, qhov cua thiab qhov tsaus ntuj, thiab tsis txhob sib cuag nrog cov oxidants muaj zog.
Txoj kev Synthesis:
Nws feem ntau yog npaj los ntawm esterification ntawm 3-mercaptopropionic acid nrog ethanol nyob rau hauv lub xub ntiag ntawm ib tug acidic catalyst xws li concentrated sulfuric acid. Thaum lub sij hawm cov tshuaj tiv thaiv, ua ntej ntawm tag nrho cov, pawg carboxyl thiab pawg hydroxyl ntawm ethanol tau txais ib tug nucleophilic hloov cov tshuaj tiv thaiv nyob rau hauv acidic tej yam kev mob los tsim ester bonds, thiab nyob rau tib lub sij hawm dej yog generated. Thaum kawg ntawm cov tshuaj tiv thaiv, cov khoom yuav tsum tau purified los ntawm ib tug series ntawm tom qab ua cov kauj ruam xws li neutralization, dej ntxuav, thiab distillation kom tau high-purity Ethyl 3-Mercaptopropionate.
Siv:
Fragrance teb: Nws muaj cov ntxhiab tsw tshwj xeeb thiab siv los ua ib qho nruab nrab hauv cov tshuaj tsw qab hluavtaws hauv kev lag luam tshuaj tsw qab, uas tuaj yeem ntxiv cov tsw qab tshwj xeeb thiab txheej txheej rau cov khoom sib xyaw, thiab feem ntau siv los muab cov khoom qab zib xws li txiv hmab txiv ntoo thiab nqaij kom tau raws li qhov xav tau. ntawm cov khoom noj, tshuaj pleev ib ce thiab lwm yam kev lag luam rau fragrance diversification.
Pharmaceutical teb: Nws tuaj yeem siv los ua cov khoom siv raw lossis nruab nrab hauv cov tshuaj synthesis los tsim cov qauv molecular nrog cov dej num tshwj xeeb. Piv txwv li, nyob rau hauv cov synthesis ntawm ib co sulfur-muaj tshuaj, lawv pab pawg sulfhydryl tuaj yeem nkag mus rau hauv lub hom phiaj molecule los ntawm cov tshuaj tiv thaiv, yog li muab cov haujlwm tshwj xeeb rau cov tshuaj, xws li tshuaj tua kab mob, tshuaj tua kab mob, lossis tswj kev ua haujlwm enzyme.
Kev Ua Liaj Ua Teb: Nws kuj muaj qee yam kev siv hauv kev sib xyaw ntawm cov tshuaj tua kab, los ntawm kev hloov kho nws cov qauv molecular thiab qhia cov pab pawg tshwj xeeb, kom nws tuaj yeem ua rau muaj kev tswj xyuas zoo ntawm cov kab tsuag lossis kab mob ntawm cov qoob loo, uas pab txhim kho cov qoob loo thiab cov qoob loo zoo. thiab xyuas kom ruaj ntseg ntawm kev ua liaj ua teb ntau lawm.