ʻO Ethylene glycol monomethyl ether (i hoʻopōkole ʻia ʻo MOE), i ʻike ʻia hoʻi ʻo ethylene glycol methyl ether, he wai ʻole kala a moakaka hoʻi, hiki ke hui pū ʻia me ka wai, ka waiʻona, ka waikawa acetic, ka acetone a me DMF. Ma ke ʻano he mea hoʻoheheʻe koʻikoʻi, hoʻohana nui ʻia ʻo MOE ma ke ʻano he mea hoʻoheheʻe no nā ʻano momona like ʻole, nā acetates cellulose, nā nitrates cellulose, nā dyes hiki ke hoʻoheheʻe ʻia i ka waiʻona a me nā resins synthetic.

hoʻolauna kumu

2-Methoxyethanol
CAS 109-86-4
Helu CBN: CB4852791
ʻO ke ʻano molekole: C3H8O2
kaumaha molekala: 76.09
Kiko heheʻe: -85°C
Ka paila ʻana: 124-125°C (lit.)
Ka nui o ka paʻa: 0.965g/mL ma 25°C (mālamalama ʻia)
Kaomi ea: 6.17mmHg (20°C)
ʻIke kuhikuhi refractive: n20/D1.402(lit.)
Wahi lapalapa: 115°F
Nā kūlana mālama: E mālama ma +5°C a i +30°C

Noi hana

1. Ke ʻano hoʻomākaukau

Loaʻa mai ka hopena o ka ethylene oxide a me ka methanol. E hoʻohui i ka methanol i ka boron trifluoride ether complex, a hoʻokomo i ka ethylene oxide ma 25-30°C me ka hoʻoulu ʻana. Ma hope o ka pau ʻana o ke kaʻina hana, piʻi koke ka mahana i 38-45°C. Hoʻōla ʻia ka hopena hopena me ka potassium hydrocyanide - Neutralize i ka hopena methanol i ka pH = 8-9Chemicalbook. E hoʻihoʻi i ka methanol, hoʻoheheʻe iā ia, a hōʻiliʻili i nā ʻāpana ma mua o 130°C e loaʻa ai ka huahana maka. A laila e hana i ka distillation fractional, a hōʻiliʻili i ka ʻāpana 123-125°C ma ke ʻano he huahana i hoʻopau ʻia. I ka hana ʻoihana, hana ʻia ka ethylene oxide a me ka methanol anhydrous ma ke kiʻekiʻe o ka mahana a me ke kaomi me ka ʻole o kahi catalyst, a hiki ke loaʻa kahi huahana hua kiʻekiʻe.

2. Nā hoʻohana nui

Hoʻohana ʻia kēia huahana ma ke ʻano he mea hoʻoheheʻe no nā ʻaila like ʻole, lignin, nitrocellulose, cellulose acetate, nā dyes waiʻona-soluble a me nā resins synthetic; ma ke ʻano he reagent no ka hoʻoholo ʻana i ka hao, sulfate a me ke kalapona disulfide, ma ke ʻano he diluent no nā uhi, a no cellophane. I nā mea sila hoʻopili, nā varnish maloʻo wikiwiki a me nā enamels. Hiki ke hoʻohana ʻia ma ke ʻano he mea komo a me ka mea hoʻohālikelike i ka ʻoihana dye, a i ʻole he plasticizer a me ka brightener. Ma ke ʻano he waena i ka hana ʻana o nā hui organik, hoʻohana nui ʻia ka ethylene glycol monomethyl ether i ka synthesis o ka acetate a me ka ethylene glycol dimethyl ether. ʻO ia kekahi mea maka no ka hana ʻana o ka bis(2-methoxyethyl) phthalate plasticizer. ʻO ka hui ʻana o ka ethylene glycol monomethyl ether a me ka glycerin (ether: glycerin = 98:2) he mea hoʻohui wahie mokulele koa e hiki ke pale i ka hau a me ka corrosion bacteria. Ke hoʻohana ʻia ka ethylene glycol monomethyl ether ma ke ʻano he mea hoʻoheheʻe wahie mokulele, ʻo ka nui o ka hoʻohui maʻamau he 0.15% ± 0.05%. He hydrophilicity maikaʻi kona. Hoʻohana ia i kāna hui hydroxyl ponoʻī i loko o ka wahie e launa pū me nā nui liʻiliʻi o nā molekala wai i loko o ka ʻaila. ʻO ka hoʻokumu ʻia ʻana o ka hui pilina hydrogen, me kona kiko hau haʻahaʻa loa, e hoʻohaʻahaʻa i ka kiko hau o ka wai i loko o ka ʻaila, e ʻae ana i ka wai e hoʻoheheʻe i ka hau. ʻO ka Ethylene glycol monomethyl ether kekahi mea hoʻohui anti-microbial.

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