Ethylene glycol monomethyl ether (lub npe hu ua MOE), tseem hu ua ethylene glycol methyl ether, yog cov kua tsis muaj xim thiab pob tshab, miscible nrog dej, cawv, acetic acid, acetone thiab DMF. Raws li cov kuab tshuaj tseem ceeb, MOE tau dav siv los ua cov kuab tshuaj rau ntau yam roj, cellulose acetates, cellulose nitrates, cawv-soluble dyes thiab hluavtaws resins.

kev taw qhia yooj yim

2-Methoxyethanol
CAS 109-86-4 Nr
CBN No.: CB4852791
Cov mis mos molecular: C3H8O2
Molecular Luj: 76.09
Melting point: -85 ° C
Kub taw tes: 124-125 ° C (lit.)
Ceev: 0.965g / mL ntawm 25 ° C (lit.)
Cua siab: 6.17mmHg (20 ° C)
Refractive Index: N20 / D1.402 (lit.)
Lub teeb taw tes: 115 ° F
Cia tej yam kev mob: Cia + 5 ° Cto + 30 ° C

Daim ntawv thov kev tsim khoom

1. Txoj kev npaj

Muab los ntawm cov tshuaj tiv thaiv ntawm ethylene oxide thiab methanol. Ntxiv methanol rau boron trifluoride ether complex, thiab dhau hauv ethylene oxide ntawm 25-30 ° C thaum nplawm. Tom qab ua tiav, qhov ntsuas kub tau nce mus rau 38-45 ° C. Cov tshuaj tiv thaiv tshwm sim yog kho nrog potassium hydrocyanide- Neutralize cov tshuaj methanol rau pH = 8-9Chemicalbook. Rov qab kho methanol, distilled nws, thiab sau cov feem ua ntej 130 ° C kom tau cov khoom nyoos. Tom qab ntawd ua cov fractional distillation, thiab sau cov 123-125 ° C feem raws li cov khoom tiav. Hauv kev tsim khoom lag luam, ethylene oxide thiab anhydrous methanol tau hnov ​​​​mob ntawm qhov kub thiab txias yam tsis muaj catalyst, thiab cov khoom lag luam siab tuaj yeem tau txais.

2. Kev siv tseem ceeb

Cov khoom no yog siv los ua cov kuab tshuaj rau ntau yam roj, lignin, nitrocellulose, cellulose acetate, cawv-soluble dyes thiab hluavtaws resins; raws li ib tug reagent rau kev txiav txim ntawm hlau, sulfate thiab carbon disulfide, raws li ib tug diluent rau coatings, thiab rau cellophane. Nyob rau hauv lub ntim sealers, ceev-drying varnishes thiab enamels. Nws kuj tseem siv tau los ua tus neeg sawv cev nkag mus thiab qib tus neeg sawv cev hauv kev lag luam dyeing, los yog ua cov yas yas thiab ci ci. Raws li qhov nruab nrab hauv kev tsim cov organic tebchaw, ethylene glycol monomethyl ether feem ntau yog siv rau hauv kev sib txuas ntawm acetate thiab ethylene glycol dimethyl ether. Nws tseem yog cov khoom siv raw rau kev tsim cov bis (2-methoxyethyl) phthalate plasticizer. Kev sib xyaw ntawm ethylene glycol monomethyl ether thiab glycerin (ether: glycerin = 98: 2) yog cov tub rog dav hlau roj ntxiv uas tuaj yeem tiv thaiv icing thiab kab mob corrosion. Thaum ethylene glycol monomethyl ether yog siv los ua lub dav hlau roj antisizing tus neeg sawv cev, qhov sib ntxiv ntxiv yog 0.15% ± 0.05%. Nws muaj hydrophilicity zoo. Nws siv nws cov pab pawg hydroxyl hauv cov roj los cuam tshuam nrog cov kab ntawm cov dej molecules hauv cov roj. Kev tsim ntawm hydrogen daim ntawv cog lus koom nrog, ua ke nrog nws qhov chaw khov qis heev, txo qis qhov dej khov ntawm cov roj hauv cov roj, tso cai rau cov dej los nag rau hauv Frost. Ethylene glycol monomethyl ether kuj yog ib qho tshuaj tiv thaiv kab mob.

Ntim, cia thiab thauj

Warehouse yog ventilated thiab qhuav ntawm qhov kub thiab txias; khaws cia cais los ntawm oxidants.

Cov ntaub ntawv tiv tauj

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