Diethyl Malonate CAS 105-53-3
Khoom npe: Daivlaus Malonate
CAS: 105-53-3
Mf: c7h12o4
Melting taw tes: -50 ° C
TUB NTIAJ TEB: 199 ° C
Quav: 1.055 g / ml
Pob: 1 L / Lub raj mis, 25 L / Nruas, 200 l / Nruas
1.Nws yog cov zaub mov tsw, tsuas yog siv rau kev npaj txiv hmab txiv ntoo qab xws li pears, txiv apples, txiv hmab thiab cherries.
2.Nws tau siv dav hauv cov xwm txheej ntawm barbituric acid, amino acids, vitamins B1, B2 thiab B6, pw tsaug zog thiab phenylbutazone.
3.Nws tseem muaj dav nyob hauv lwm cov tshuaj tsim cov tshuaj lom neeg teb, suav nrog tshuaj tua kab, kev ua kua, ua kua crystal ntaub ntawv, thiab lwm yam.
4. Lub tsev tsim hauv Synthesis: Nws nquag siv los ua ib tug ua ntej ua ntej hauv cov synthes ntawm cov organication, suav nrog cov tshuaj carounds, suav nrog cov tshuaj carounds, suav nrog cov tshuaj, agnchemicals, thiab dyes.
5. Malonate synthesis: Difeyl Malonate siv nyob rau hauv Malonate synthesis, uas yog ib txoj kev rau kev tsim cov roj carboxylic acids thiab lawv cov derivatives.
6. Kev npaj ntawm β-keto acids: β-keto acids tuaj yeem ua ke los ntawm cov txheej txheem hu ua alkylation.
7.
8. Seasoning thiab Spice: Vim nws cov txiv hmab txiv tsis hnov tsw, nws kuj tseem siv tau hauv kev lag luam thiab txuj lom.
Nws yog soluble hauv chloroform, benzene thiab lwm cov kuab tshuaj organic. Me ntsis soluble hauv dej.
1. Khaws rau hauv qhov chaw txias, tshuab ua kom muaj zog. Tseg deb ntawm hluav taws thiab cov khoom cua sov. Nws yuav tsum tau muab cais cais tawm los ntawm oxidants, muaj zog alkalis, thiab txo cov neeg sawv cev, thiab zam kom tsis txhob sib xyaw. Nruab nrog cov khoom tsim nyog ntau thiab ntau thiab ntau ntawm cov khoom siv hluav taws. Cov chaw cia khoom yuav tsum tau nruab nrog cov khoom siv kub ceev thiab cov khoom siv cia khoom haum.
2. Khaws thiab thauj tau raws li cov kev cai ntawm cov nplaim hluavtaws.
1. Thawv: Khaws Diethyl Paronate nyob rau hauv ib lub thawv kaw kom tiv thaiv kev ua paug thiab evaporation. Siv cov thawv ua los ntawm iav lossis tau muaj yas.
2. Kub: Thov khaws nws rau hauv qhov chaw txias thiab qhuav, kom deb ntawm kev tshav ntuj ncaj qha thiab cov khoom kub. Qhov tseeb, nws yuav tsum tau khaws cia ntawm chav tsev kub lossis hauv tub yees yog tias ntev cia yuav tsum muaj.
3. Inert roj: yog tias ua tau, khaws cia hauv qab cov roj hauv cov pa roj ntsha xws li arertrogen lossis army kom txo qis kev ua kom noo thiab huab cua, uas yuav ua rau muaj pa dej lossis oxidation.
4. Daim ntawv lo: Daim ntawv lo kom meej kom muaj cov npe siv tshuaj, kev xav, thiab hnub khaws cia kom ntseeg tau tias muaj kev txheeb xyuas kom paub tseeb tias yog kev txheeb xyuas kom paub tseeb tias yog kev txheeb xyuas kom paub tseeb tias yog kev txheeb xyuas kom paub tseeb tias yog kev txheeb xyuas kom paub tseeb tias yog kev txheeb xyuas kom paub tseeb tias yog kev txheeb xyuas kom muaj tseeb thiab tuav.
5. Kev ceev faj kev nyab xeeb: Ua raws li cov lus qhia kev nyab xeeb thiab cov kev cai lij choj rau kev tuav tshuaj thiab khaws cov khoom siv tsim nyog (PPE) thaum tuav Diethyl malonate.
1. Zam kev sib cuag nrog oxidants, txo cov neeg sawv cev thiab alkalis. Cov tshuaj lom neeg muaj qhov ruaj khov dua li diethyl oxalate. Vim tias nws yooj yim hydrolyzed los tsim malonic acid, uas yog ntau acidic, nws yog qhov tsim nyog yuav tsum tiv thaiv kom nqus tau pa lossis tiv toj ntawm daim tawv nqaij.
2. Cov khoom no muaj tsawg toxicity, piv qhov ncauj LD50> 1600mg / kg, tab sis nws yuav yog hydrolyzed rau hauv lub cev, zam kev sib cuag. Ntxuav tom qab hu. Cov neeg ua haujlwm yuav tsum hnav cov hnab looj tes roj hmab.
1. Kev tswj xyuas raws li: Xyuas kom koj ua raws li txhua lub zos, hauv tebchaws thiab thoob ntiaj teb cov cai hais txog kev thauj khoom. Qhov no yuav suav nrog daim ntawv sau kom zoo, ntaub ntawv thiab ua raws li cov txheej txheem kev phom sij.
2. Ntim: Siv cov ntaub ntawv ntim uas tsim nyog uas tau sib xws nrog Dibethyl malonate. Lub thawv yuav tsum tau xau thiab ua los ntawm cov ntaub ntawv uas tsis hnov mob nrog cov tshuaj. Nco ntsoov tias lub ntim muaj zog txaus los tiv thaiv kev tuav ntawm kev thauj mus los.
3. Tswj kub: Ua kom sov ntawm diethyl malonate ruaj khov thaum lub sijhawm thauj mus los. Zam kev ua kom sov siab heev, uas yuav cuam tshuam rau kev sab nrauv ntawm cov tshuaj.
4. INTER Roj: Yog tias ua tau, diethyl malonate yuav tsum tau thauj nyob rau hauv ib tug yam uas minimizes nws raug rau huab cua thiab noo noo, raws li cov no yuav ua rau nws ua rau nws ua tsis taus nws.
5. Cov cuab yeej tiv thaiv tus kheej (PPE): Xyuas kom meej tias cov neeg ua haujlwm thauj khoom rau cov hnab looj tes uas tsim nyog hnav PPE, suav nrog cov hnab looj tes uas tsim nyog hnav ris tsho thiab tiv thaiv cov tawv nqaij thiab qhov muag.
6. Cov txheej txheem txheej txheem thaum muaj xwm ceev: muaj cov txheej txheem thaum muaj xwm ceev hauv qhov chaw txeej lossis dej xau thaum thauj khoom. Qhov no suav nrog kev muaj cov khoom siv hluav taws xob npaj txhij txhua lub sijhawm thiab ua kom cov neeg ua haujlwm tau txais kev kawm thaum muaj xwm txheej ceev.
7. Zam cov ntaub ntawv tsis sib xws: thaum lub sij hawm Diethyl Malonate yuav tsum tau ceev cia ntawm cov khoom siv tsis sib xws xws li oxidants muaj zog, acids thiab bases kom tiv thaiv kev phom sij.
