Ethylene glycol monomethyl ether (wanda aka rage a matsayin MOE), wanda kuma aka sani da ethylene glycol methyl ether, ruwa ne mara launi kuma mai gaskiya, wanda ba shi da ruwa, barasa, acetic acid, acetone da DMF. A matsayin mai mahimmanci mai mahimmanci, MOE ana amfani dashi sosai azaman mai narkewa don nau'ikan greases, cellulose acetates, cellulose nitrates, dyes-mai narkewar barasa da resins na roba.

gabatarwar asali

2-Methoxyethanol
Saukewa: CAS109-86-4
Lambar CBN: CB4852791
Tsarin kwayoyin halitta: C3H8O2
Nauyin kwayoyin: 76.09
Wurin narkewa: -85°C
Matsayin tafasa: 124-125 ° C (lit.)
Yawa: 0.965g/ml a 25°C (lit.)
Matsin iska: 6.17mmHg (20°C)
Fihirisar magana: n20/D1.402(lit.)
Wutar walƙiya: 115°F
Yanayin ajiya: Adana +5°Cto+30°C

Aikace-aikacen samarwa

1. Hanyar shiri

An samo shi daga tasirin ethylene oxide da methanol. Ƙara methanol zuwa hadaddun ether na boron trifluoride, kuma ku wuce cikin ethylene oxide a 25-30 ° C yayin motsawa. Bayan an gama aikin, zafin jiki yana tashi ta atomatik zuwa 38-45 ° C. Sakamakon sakamako ana bi da shi tare da potassium hydrocyanide- Neutralize the methanol solution to pH=8-9Chemicalbook. Mai da methanol, distilled shi, kuma tattara ɓangarorin kafin 130 ° C don samun ɗanyen samfurin. Sa'an nan kuma aiwatar da distillation na juzu'i, kuma tattara juzu'in 123-125 ° C azaman samfurin da aka gama. A cikin samar da masana'antu, ethylene oxide da methanol anhydrous suna amsawa a babban zafin jiki da matsa lamba ba tare da mai kara kuzari ba, kuma ana iya samun samfurin yawan amfanin ƙasa.

2. Babban amfani

Ana amfani da wannan samfurin azaman mai ƙarfi don mai daban-daban, lignin, nitrocellulose, acetate cellulose, dyes mai narkewa da barasa da resins na roba; a matsayin reagent don ƙaddara ƙarfe, sulfate da carbon disulfide, a matsayin diluent don sutura, da kuma cellophane. A cikin marufi sealers, da sauri-bushe varnishes da enamels. Hakanan za'a iya amfani dashi azaman wakili mai shiga da kuma daidaitawa a cikin masana'antar rini, ko azaman filastik mai haske da haske. A matsayin tsaka-tsaki a cikin samar da kwayoyin halitta, ethylene glycol monomethyl ether yafi amfani dashi a cikin haɗin acetate da ethylene glycol dimethyl ether. Hakanan shine albarkatun ƙasa don samar da bis (2-methoxyethyl) phthalate plasticizer. Haɗin ethylene glycol monomethyl ether da glycerin (ether: glycerin = 98: 2) ƙari ne na man jet na soja wanda zai iya hana icing da lalata ƙwayoyin cuta. Lokacin amfani da ethylene glycol monomethyl ether azaman jet man antisizing wakili, babban adadin adadin shine 0.15% ± 0.05%. Yana da kyau hydrophilicity. Yana amfani da nasa rukunin hydroxyl a cikin mai don yin hulɗa tare da adadin ƙwayoyin ruwa a cikin mai. Samar da haɗin gwiwar hydrogen, tare da ƙarancin daskarewa, yana rage daskarewa na ruwa a cikin mai, yana ba da damar ruwan ya yi sanyi. Ethylene glycol monomethyl ether kuma shine ƙari na ƙwayoyin cuta.

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