Ethylene glycol monomethyl ether (fa'apu'upu'u o le MOE), e ta'ua fo'i o le ethylene glycol methyl ether, o se vai e leai ni lanu ma manino, fa'afefiloi ma le vai, ava malosi, acetic acid, acetone ma le DMF. I le avea ai o se solvent taua, MOE o loʻo faʻaaogaina lautele e avea o se solvent mo gaʻo eseese, cellulose acetates, cellulose nitrates, vailaʻau e mafai ona soʻona ava malosi ma resini gaosia.
folasaga faavae
2-Methoxyethanol
CAS 109-86-4
Numera CBN: CB4852791
Fuafua mole: C3H8O2
mamafa mole: 76.09
Liu liusuavai: -85°C
Fa'apuna: 124-125°C (malamalama)
Malosi: 0.965g/mL ile 25°C (malamalama)
Malosi o le ea: 6.17mmHg (20°C)
Fa'ailoga fa'afofoga: n20/D1.402(malamalama)
Itu ole moli: 115°F
Tulaga e teu ai: Teuga+5°Cto+30°C
Gaosiga talosaga
1. Sauniuniga auala
E maua mai i le tali atu o le ethylene oxide ma le methanol. Fa'aopopo le methanol ile boron trifluoride ether complex, ma pasi ile ethylene oxide ile 25-30°C a'o fa'aoso. A maeʻa le ala, e otometi lava ona oso aʻe le vevela ile 38-45°C. O le tali e maua mai e togafitia i le potassium hydrocyanide- Fa'amama le vaifofo methanol i le pH=8-9Chemicalbook. Toe fa'afo'i le methanol, fa'amama, ma ao mai vaega ninii a'o le'i o'o i le 130°C ina ia maua ai le oloa mama. Ona faia lea o le distillation vaega ninii, ma aoina le vaega 123-125 ° C e pei o le oloa maeʻa. I le gaosiga o fale gaosi oloa, o le ethylene oxide ma le anhydrous methanol e tali atu i le maualuga o le vevela ma le mamafa e aunoa ma se faʻamalosi, ma e mafai ona maua se oloa maualuga.
2. Fa'aoga autu
O lenei oloa o loʻo faʻaaogaina e avea o se solvent mo suauʻu eseese, lignin, nitrocellulose, cellulose acetate, vailaʻau faʻafefeteina ma vailaʻau faʻapipiʻi; e avea o se reagent mo le fuafuaina o le uʻamea, sulfate ma carbon disulfide, e avea o se diluent mo coatings, ma mo cellophane. I faʻamau faʻamaufaʻailoga, faʻamago vave varnish ma enamels. E mafai foʻi ona faʻaaogaina e avea o se mea faʻapipiʻi ma faʻapipiʻiina i totonu o le pisinisi vali, poʻo se palasitika ma faʻamalamalama. I le avea ai o se vaeluagalemu i le gaosiga o mea faʻapitoa, o le ethylene glycol monomethyl ether e masani ona faʻaaogaina i le faʻaogaina o le acetate ma le ethylene glycol dimethyl ether. O le mea faʻapitoa foʻi mo le gaosiga o le bis(2-methoxyethyl) phthalate plasticizer. O le faʻafefiloi o le ethylene glycol monomethyl ether ma le glycerin (eter: glycerin = 98: 2) o se faʻapipiʻi suauʻu a le militeri e mafai ona puipuia ai le aisa ma siama siama. A faʻaaogaina le ethylene glycol monomethyl ether e avea o se suauʻu faʻamaʻi faʻamaʻi, o le aofaʻi faʻaopoopoga lautele o le 0.15% ± 0.05%. E lelei le hydrophilicity. E fa'aogaina lana lava vaega o le hydroxyl i le suauu e fegalegaleai ai ma le tele o mole mole vai i totonu o le suauu. O le fa'avaeina o fa'atasiga o le hydrogen, fa'atasi ai ma lona tulaga fa'a'aisa matua maualalo, e fa'aitiitia ai le vai malulu i totonu o le suau'u, ma fa'ataga ai le vai e fa'amalo i le aisa. Ethylene glycol monomethyl ether o se mea faʻapipiʻi anti-microbial.
afifiina, teuina ma felauaiga
O le faleteuoloa e faʻafefe ma faʻagogo i le maualalo o le vevela; teuina ese mai oxidants.
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Taimi meli: Iuni-13-2024