I-2-Methoxyethanol CAS 109-86-4
Isingeniso somkhiqizo
I-Ethylene glycol monomethyl ether (efushanisiwe ngokuthi i-MOE), eyaziwa nangokuthi i-ethylene glycol methyl ether, iwuketshezi olungenambala nolusobala, oluxutshwa namanzi, utshwala, i-acetic acid, i-acetone kanye ne-DMF. Njenge-solvent ebalulekile, i-MOE isetshenziswa kabanzi njenge-solvent yamafutha ahlukahlukene, ama-cellulose acetate, ama-cellulose nitrate, amadayi ancibilikayo kotshwala kanye nama-resin okwenziwa.
Itholakala ngokusabela kwe-ethylene oxide ne-methanol. Faka i-methanol ku-boron trifluoride ether complex, bese udlula ku-ethylene oxide ku-25-30°C ngenkathi uvuselela. Ngemva kokuphothulwa kokudlula, izinga lokushisa likhuphuka ngokuzenzakalelayo liye ku-38-45°C. Isixazululo sokusabela esiphumelayo siphathwa nge-potassium hydrocyanide- Nciphisa isisombululo se-methanol sibe yi-pH=8-Chemicalbook9. Buyisela i-methanol, uyihluze, bese uqoqa izingxenyana ngaphambi kuka-130°C ukuthola umkhiqizo ongahluziwe. Bese wenza i-fractional distillation, bese uqoqa ingxenyana engu-123-125°C njengomkhiqizo oqediwe. Ekukhiqizweni kwezimboni, i-ethylene oxide kanye ne-anhydrous methanol kusabela ekushiseni okuphezulu kanye nokucindezela ngaphandle kwe-catalyst, futhi umkhiqizo okhiqizayo kakhulu ungatholakala.
Inkambu yohlelo lokusebenza
Lo mkhiqizo usetshenziswa njengesithako samafutha ahlukahlukene, i-lignin, i-nitrocellulose, i-cellulose acetate, amadayi ancibilika ngotshwala kanye nama-resin okwenziwa; njenge-reagent yokunquma i-iron, i-sulfate kanye ne-carbon disulfide, njengesithako sokuxuba izinto, kanye ne-cellophane. Kuma-sealers okupakisha, ama-varnish okomisa ngokushesha kanye nama-enamel. Ingasetshenziswa futhi njenge-ejenti engena ngaphakathi kanye ne-ejenti yokulinganisa embonini yodayi, noma njenge-plasticizer kanye ne-brightener. Njengengxenye ephakathi ekukhiqizweni kwamakhemikhali e-organic, i-ethylene glycol monomethyl ether isetshenziswa kakhulu ekwakhiweni kwe-acetate kanye ne-ethylene glycol dimethyl ether. Futhi iyinto eluhlaza ye-Chemicalbook yokukhiqiza i-bis(2-methoxyethyl)phthalate plasticizer. Ingxube ye-ethylene glycol monomethyl ether kanye ne-glycerin (ether: glycerin = 98:2) iyisengezo sikaphethiloli we-jet wezempi esingavimbela i-icing kanye nokugqwala kwamagciwane. Uma i-ethylene glycol monomethyl ether isetshenziswa njenge-ejenti yokuvimbela usayizi wamafutha e-jet, inani elijwayelekile lokwengeza lingu-0.15% ± 0.05%. Ine-hydrophilicity enhle. Isebenzisa iqembu layo le-hydroxyl kuphethiloli ukuze isebenzisane nenani elincane lama-molecule amanzi kuphethiloli. Ukwakheka kwe-hydrogen bond association, kanye nephuzu layo eliphansi kakhulu lokuqandisa, kunciphisa iphuzu lokuqandisa lamanzi kuphethiloli, okuvumela amanzi ukuthi angene eqhweni. I-ethylene glycol monomethyl ether nayo iyisengezo esilwa namagciwane.
Incazelo yokwakha
2-Methoxyethanol
I-CAS 109-86-4
Inombolo ye-CB: CB4852791
Ifomula yama-molecule: C3H8O2
isisindo sama-molecule: 76.09
Indawo yokuncibilika: -85°C
Iphuzu lokubila: 124-125°C (lit.)
Ubuningi: 0.965g/mL ku-25°C (ngokukhanya)
Umfutho womoya: 6.17mmHg (20°C)
Inkomba yokubuka: n20/D1.402(lit.)
Iphuzu lokukhanya: 115°F
Izimo zokugcina: Gcina ku-+5°C kuya ku-+30°C
Isitoreji kanye nokuthuthwa
Ukupakisha: ngokuya ngemfuneko yamakhasimende
Indawo Yokugcina: Gcina endaweni eyomile, emnyama futhi enomoya.
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