I-Ethylene glycol monomethyl ether (efinyeziweyo njenge-MOE), eyaziwa ngokuba yi-ethylene glycol methyl ether, i-liquid engenambala kunye ne-transparent, ixutywe ngamanzi, utywala, i-acetic acid, i-acetone kunye ne-DMF. Njengesinyibilikisi esibalulekileyo, i-MOE isetyenziswa ngokubanzi njenge-solvent yeegrisi ezahlukeneyo, i-cellulose acetates, i-nitrate ye-cellulose, iidayi ezinyibilikayo ngotywala kunye ne-synthetic resins.

intshayelelo esisiseko

2-Methoxyethanol
I-CAS 109-86-4
Inombolo ye-CB: CB4852791
Ifomula yemolekyuli : C3H8O2
ubunzima bemolekyuli : 76.09
Indawo yokunyibilika: -85°C
Indawo yokubila: 124-125°C (lit.)
Ubuninzi: 0.965g/mL ku-25°C (lit.)
Uxinzelelo lomoya: 6.17mmHg (20°C)
Isalathiso se-refractive: n20/D1.402(lit.)
Indawo edanyazayo: 115°F
Iimeko zokugcina: Ugcino+5°Cto+30°C

Isicelo sokuvelisa

1. Indlela yokulungiselela

Ithathwe kwi-reaction ye-ethylene oxide kunye ne-methanol. Yongeza i-methanol kwi-boron trifluoride ether complex, kwaye udlule kwi-ethylene oxide kwi-25-30 ° C ngelixa uvuselela. Emva kokuba isicatshulwa sigqityiwe, ubushushu buphakama ngokuzenzekelayo ukuya kuma-38-45 ° C. Isiphumo sokuphendula isisombululo siphathwa nge-potassium hydrocyanide- Neutralize isisombululo se-methanol kwi-pH=8-9Chemicalbook. Fumana i-methanol, yigalele, kwaye uqokelele amaqhezu phambi kwe-130°C ukufumana imveliso ekrwada. Emva koko yenza i-distillation ye-fractional, kwaye uqokelele i-123-125 ° C iqhezu njengemveliso egqityiweyo. Kwimveliso yoshishino, i-ethylene oxide kunye ne-methanol ye-anhydrous iphendulwa kwiqondo lokushisa eliphezulu kunye noxinzelelo ngaphandle kwe-catalyst, kwaye imveliso ephezulu yemveliso inokufumaneka.

2. Usetyenziso oluphambili

Le mveliso isetyenziselwa i-solvent yee-oyile ezahlukeneyo, i-lignin, i-nitrocellulose, i-cellulose acetate, i-alcohol-soluble dyes kunye ne-synthetic resins; njenge-reagent yokumisela i-iron, i-sulfate kunye ne-carbon disulfide, njenge-diluent ye-coatings, kunye ne-cellophane. Kwiimpawu zokupakisha, i-varnishes eyomileyo ngokukhawuleza kunye ne-enamels. Isenokusetyenziswa njenge-arhente yokungena kunye ne-ejenti yokulinganisa kwishishini ledayi, okanye njengeplastiki kunye ne-lightener. Njengophakathi kwimveliso ye-organic compounds, i-ethylene glycol monomethyl ether isetyenziswa ikakhulu kwi-synthesis ye-acetate kunye ne-ethylene glycol dimethyl ether. Ikwayimathiriyeli ekrwada yokwenziwa kwe-bis(2-methoxyethyl) phthalate plasticizer. Umxube we-ethylene glycol monomethyl ether kunye ne-glycerin (i-ether: i-glycerin = 98: 2) i-jet ye-jet ye-fuel additive enokuthintela i-icing kunye ne-corrosion ye-bacterial. Xa i-ethylene glycol monomethyl ether isetyenziswa njenge-jet fuel antisizing agent, imali eyongeziweyo ngokubanzi yi-0.15% ± 0.05%. Ine-hydrophilicity elungileyo. Isebenzisa iqela layo le-hydroxyl kwi-fuel ukusebenzisana kunye nemilinganiselo ye-molecule yamanzi kwi-oyile. Ukwenziwa kobudlelwane be-hydrogen bond, kudityaniswa neqondo lomkhenkce eliphantsi kakhulu, kwehlisa indawo yokukhenkceza yamanzi kwi-oyile, kuvumela amanzi ukuba abe yiqabaka. I-Ethylene glycol monomethyl ether ikwayinto echasene ne-microbial additive.

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