Nchịkọta:

Dimethyl carbonate, nke a na-akpọ DMC, bụ mmiri mmiri na-enweghị agba, nke na-apụta ìhè nke nwere isi na-esi ísì ụtọ n'ọnọdụ okpomọkụ ụlọ. Njupụta ya (d204) bụ 1.0694, ebe agbaze bụ 4℃, ebe esi mmiri bụ 90.3℃, ebe ọkụ bụ 21.7℃ (mmepe) 16.7℃ (ọnụ mechiri emechi), ihe na-agbanwe agbanwe (nd2Chemicalbook0)1.3687, nke na-ere ọkụ, nke na-adịghị egbu egbu. Enwere ike ịgwakọta ya na ihe fọrọ nke nta ka ọ bụrụ ihe mgbaze organic niile dị ka alcohols, ketones, na esters n'ókè ọ bụla, ọ na-agbazekwa ntakịrị na mmiri. Enwere ike iji ya dị ka ihe na-eme ka methylating reagent dị. Ma e jiri ya tụnyere ihe ndị ọzọ na-eme ka methylating reagent dị, dị ka methyl iodide na dimethyl sulfate, dimethyl carbonate anaghị egbu egbu ma ọ bụ gbawaa agbawa.

Njirimara Kemịkalụ

Mmiri mmiri na-enweghị agba na nke na-apụta ìhè nke nwere isi na-esi ísì ụtọ. A naghị agbaze na mmiri, a na-agbaze na ihe ndị na-agbaze n'ime ihe ndị dị ndụ dịka ethanol na ether.

jiri

1. Ụdị ihe mgbaze ọhụrụ nke na-adịghị egbu egbu nwere ike dochie toluene, xylene, ethyl acetate, butyl acetate, acetone ma ọ bụ methyl ethyl ketone na ihe mgbaze ndị ọzọ dị na ụlọ ọrụ agba na ihe nrapado. Ọ bụ ngwaahịa kemịkalụ akwụkwọ ndụ akwụkwọ ndụ na-adịghị emebi gburugburu ebe obibi.

2. Ezigbo ihe na-eme ka methylating dị mma, ihe na-eme ka carbonylating dị mma, ihe na-eme ka hydroxymethylating dị mma na ihe na-eme ka methoxylating dị mma. A na-ejikarị ya eme ihe n'ihe gbasara antioxidants nri, ihe na-eme ka osisi na ihe ndị ọzọ dị ndụ. Ọ bụ ihe e ji emepụta kemịkalụ nke a na-ejikarị eme ihe.

3. Ihe nnọchi zuru oke maka kemịkalụ ndị na-egbu egbu dị oke njọ dịka phosgene, dimethyl sulfate, Chemicalbook methyl chloroformate, wdg.

4. Jiri polycarbonate, diphenyl carbonate, isocyanate, wdg mee ihe.

5. N'ọgwụ, a na-eji ya emepụta ọgwụ mgbochi nje, ọgwụ mgbu na mgbu, ọgwụ vitamin, na ọgwụ sistem akwara etiti.

6. Maka ọgwụ nje, a na-ejikarị ya emepụta methyl isocyanate, wee mepụta ụfọdụ ọgwụ carbamate na ọgwụ ahụhụ (anisole).

7. Ihe mgbakwunye mmanụ ụgbọala, electrolyte batrị lithium, wdg.

A na-enweta usoro mmepụta site na imeghachi omume methyl chloroformate na methanol. A na-enweta methyl chloroformate eji eme ihe na mmeghachi omume ahụ site na mmeghachi omume nke methanol na phosgene. N'oge nkwadebe, enwere ike ịmepụta ngwaahịa phosgenation a site na ịgbakwunye methanol gabigara ókè na imeghachi omume ahụ na-enweghị nkewa iji mepụta dimethyl carbonate. A na-akpọ mmeghachi omume ahụ dị n'elu usoro phosgene ọdịnala na Chemicalbook. Usoro transesterification gụnyere mmeghachi omume transesterification n'etiti ethylene carbonate ma ọ bụ propylene carbonate na methanol iji mepụta dimethyl carbonate. Usoro a nwere nnukwu mmepụta, obere akụrụngwa corrosion, na ọnọdụ mmeghachi omume dị nro. Agbanyeghị, isi iyi nke ihe ndị e ji emepụta ihe na-egbochi mmepe nke ụlọ ọrụ petrochemical na ọnụego ojiji ihe dị ala.

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