Ethylene glycol monomethyl ether (nke a kpọchiri akpọchi dị ka MOE), nke a makwaara dị ka ethylene glycol methyl ether, bụ mmiri mmiri na-enweghị agba na nke doro anya, nke a na-agwakọta ya na mmiri, mmanya, acetic acid, acetone na DMF. Dịka ihe mgbaze dị mkpa, a na-ejikarị MOE eme ihe dị ka ihe mgbaze maka ọtụtụ mmanụ dị iche iche, cellulose acetates, cellulose nitrates, agba ndị na-agbaze mmanya na resins sịntetik.

okwu mmalite bụ isi

2-Methoxyethanol
CAS 109-86-4
Nọmba CB4852791
Usoro molekụla: C3H8O2
Ibu molekul: 76.09
Ebe agbaze: -85°C
Ebe esi mmiri: 124-125°C (ọkụ)
Njupụta: 0.965g/mL na 25°C (ọkụ)
Nrụgide ikuku: 6.17mmHg (20°C)
Ndekọ Refractive: n20/D1.402(mkpụrụ)
Ebe ọkụ: 115°F
Ọnọdụ nchekwa: Nchekwa na+5°C ruo+30°C

Ngwa mmepụta

1. Usoro nkwadebe

A na-enweta ya site na mmeghachi omume nke ethylene oxide na methanol. Tinye methanol na ngwakọta boron trifluoride ether, ma tinye ethylene oxide na 25-30°C ka ị na-agwakọta ya. Mgbe emechara ngafe ahụ, okpomọkụ na-arị elu na 38-45°C na akpaghị aka. A na-agwọ ngwọta mmeghachi omume sitere na ya na potassium hydrocyanide- Neutralize the methanol solution ka ọ bụrụ pH=8-9Chemicalbook. Weghachite methanol, gbazee ya, ma chịkọta akụkụ tupu 130°C iji nweta ngwaahịa ahụ. Mgbe ahụ mee fractional distillation, ma chịkọta 123-125°C fraction dị ka ngwaahịa emechara. Na mmepụta ụlọ ọrụ mmepụta ihe, a na-emeghachi omume ethylene oxide na methanol anhydrous na okpomọkụ na nrụgide dị elu na-enweghị ihe mkpali, enwere ike nweta ngwaahịa mmepụta dị elu.

2. Ojiji ndị bụ isi

A na-eji ngwaahịa a dị ka ihe mgbaze maka ọtụtụ mmanụ dị iche iche, lignin, nitrocellulose, cellulose acetate, agba mmanya na-agbaze na resin sịntetik; dị ka ihe na-eme ka a chọpụta iron, sulfate na carbon disulfide, dị ka ihe na-agbaze maka mkpuchi, na maka cellophane. N'ime ihe mkpuchi nkwakọ ngwaahịa, varnish na enamel na-akpọ nkụ ngwa ngwa. Enwere ike iji ya dị ka ihe na-abanye n'ime na ihe na-eme ka ọkwa dị elu na ụlọ ọrụ agba, ma ọ bụ dị ka ihe na-eme ka plastik na ihe na-eme ka ọ dị mma. Dị ka ihe dị n'etiti na mmepụta nke ihe ndị sitere n'okike, a na-ejikarị ethylene glycol monomethyl ether eme ihe na njikọ nke acetate na ethylene glycol dimethyl ether. Ọ bụkwa ihe eji emepụta plasticizer bis(2-methoxyethyl) phthalate. Ngwakọta nke ethylene glycol monomethyl ether na glycerin (ether: glycerin = 98:2) bụ ihe mgbakwunye mmanụ ụgbọelu agha nke nwere ike igbochi icing na corrosion nje bacteria. Mgbe ejiri ethylene glycol monomethyl ether dị ka ihe na-egbochi nhazi mmanụ ụgbọelu, ego mgbakwunye izugbe bụ 0.15% ± 0.05%. Ọ nwere ezigbo hydrophilicity. Ọ na-eji otu hydroxyl nke ya n'ime mmanụ iji mekọrịta ọnụọgụ mmiri dị na mmanụ ahụ. Mmepụta njikọ hydrogen, yana obere ebe oyi ya, na-ebelata ebe oyi na-atụ n'ime mmanụ ahụ, na-ekwe ka mmiri ahụ banye n'ime ntu oyi. Ethylene glycol monomethyl ether bụkwa ihe mgbakwunye mgbochi nje bacteria.

Nkwakọ ngwaahịa, nchekwa na njem

A na-eku ume ma kpọọ nkụ n'ụlọ nkwakọba ihe na obere okpomọkụ; echekwara iche na ihe ndị na-eme ka oxidants ghara ịdị.

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