Ethylene glycol monomethyl ether (yofupikitsidwa kuti MOE), yomwe imadziwikanso kuti ethylene glycol methyl ether, ndi madzi opanda mtundu komanso owonekera bwino, osakanikirana ndi madzi, mowa, acetic acid, acetone ndi DMF. Monga chosungunulira chofunikira, MOE imagwiritsidwa ntchito kwambiri ngati chosungunulira mafuta osiyanasiyana, ma cellulose acetate, ma cellulose nitrates, utoto wosungunuka ndi mowa ndi ma resins opangidwa.

chiyambi choyambirira

2-Methoxyethanol
CAS 109-86-4
Nambala ya CB: CB4852791
Fomula ya maselo: C3H8O2
kulemera kwa molekyulu: 76.09
Malo osungunuka: -85°C
Kutentha: 124-125°C (lit.)
Kuchuluka: 0.965g/mL pa 25°C (lit.)
Kuthamanga kwa mpweya: 6.17mmHg (20°C)
Chizindikiro cha refractive: n20/D1.402(lit.)
Malo owunikira: 115°F
Malo osungira: Sungani pa +5°C mpaka +30°C

Ntchito yopanga

1. Njira yokonzekera

Kuchokera ku reaction ya ethylene oxide ndi methanol. Onjezani methanol ku boron trifluoride ether complex, ndikulowetsa ethylene oxide pa 25-30°C mukusakaniza. Pambuyo podutsa, kutentha kumakwera mpaka 38-45°C. Yankho lotsatira limachiritsidwa ndi potassium hydrocyanide- Sinthani yankho la methanol kukhala pH=8-9Chemicalbook. Bwezerani methanol, isungunuleni, ndikusonkhanitsa magawo asanafike 130°C kuti mupeze chinthu chosaphikidwa. Kenako chitani distillation ya magawo, ndikusonkhanitsa gawo la 123-125°C ngati chinthu chomalizidwa. Pakupanga mafakitale, ethylene oxide ndi anhydrous methanol zimayankhidwa pa kutentha kwakukulu komanso kupanikizika popanda chothandizira, ndipo chinthu chopindulitsa kwambiri chingapezeke.

2. Ntchito zazikulu

Chogulitsachi chimagwiritsidwa ntchito ngati chosungunulira mafuta osiyanasiyana, lignin, nitrocellulose, cellulose acetate, utoto wosungunuka ndi mowa ndi ma resins opangidwa; monga chothandizira kudziwa chitsulo, sulfate ndi carbon disulfide, ngati chosungunulira zokutira, komanso cellophane. Mu zotsekera zopaka, ma varnish ouma mwachangu ndi enamel. Chingagwiritsidwenso ntchito ngati cholowetsa ndi choyezera mumakampani opanga utoto, kapena ngati pulasitiki ndi chowunikira. Monga chothandizira pakupanga mankhwala achilengedwe, ethylene glycol monomethyl ether imagwiritsidwa ntchito kwambiri popanga acetate ndi ethylene glycol dimethyl ether. Ndi chinthu chopangiranso kupanga bis(2-methoxyethyl) phthalate plasticizer. Kusakaniza kwa ethylene glycol monomethyl ether ndi glycerin (ether: glycerin = 98:2) ndi chowonjezera cha mafuta ankhondo chomwe chingalepheretse icing ndi dzimbiri la bakiteriya. Pamene ethylene glycol monomethyl ether imagwiritsidwa ntchito ngati jet fuel antisize agent, kuchuluka kwa zowonjezera ndi 0.15% ± 0.05%. Ili ndi hydrophilicity yabwino. Imagwiritsa ntchito gulu lake la hydroxyl mu mafuta kuti igwirizane ndi kuchuluka kwa mamolekyu amadzi mu mafuta. Kupangidwa kwa mgwirizano wa hydrogen bond, pamodzi ndi malo ake otsika kwambiri oundana, kumachepetsa malo oundana a madzi mu mafuta, zomwe zimapangitsa kuti madziwo azitha kuzizira. Ethylene glycol monomethyl ether ndi yowonjezeranso yotsutsana ndi tizilombo toyambitsa matenda.

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