Dimethyl carbonate bụ ngwakọta organic nwere usoro kemịkalụ C3H6O3.Ọ bụ akụrụngwa akụrụngwa nke nwere obere nsi, ihe nchebe gburugburu ebe obibi mara mma yana ọtụtụ ojiji.Ọ bụ ihe dị mkpa organic njikọ etiti.Ọ nwere njirimara nke obere mmetọ na njem dị mfe.Ọdịdị nke dimethyl carbonate bụ mmiri mmiri na-enweghị agba na isi ísì;molecular arọ bụ 90.078, insoluble na mmiri, miscible na ọtụtụ organic solvents, miscible na acid na bases.
Iji dimethyl carbonate mee ihe
(1) Dochie phosgene dị ka carbonylating agent
DMC nwere otu nucleophilic mmeghachi omume center.Mgbe otu nucleophile wakporo otu carbonyl nke DMC, a na-agbaji njikọ acyl-oxygen iji mepụta ogige carbonyl, na ngwaahịa ya bụ methanol.Ya mere, DMC nwere ike dochie phosgene dị ka a mma reagent synthesize carbonic acid mmepụta., Polycarbonate ga-abụ mpaghara nwere nnukwu ọchịchọ maka DMC.
(2) Dochie dimethyl sulfate dị ka onye na-ahụ maka methylating
Mgbe ndị nucleophile wakporo methyl carbon nke DMC, a na-agbaji njikọ alkyl-oxygen ya, a na-emepụtakwa ngwaahịa methylated, na mmeghachi omume nke DMC dị elu karịa nke dimethyl sulfate, usoro ahụ dịkwa mfe.Ihe ndị a na-ejikarị eme ihe gụnyere synthetic organic intermediates, ngwaahịa ọgwụ, ngwaahịa pesticide, wdg.
(3) ihe mgbaze na-egbu egbu dị ala
DMC nwere magburu onwe solubility, warara agbaze na esi ebe ranges, nnukwu elu esemokwu, ala viscosity, ala dielectric mgbe nile, elu evaporation okpomọkụ na ngwa ngwa evaporation ọnụego, ya mere enwere ike iji ya dị ka ihe mgbaze dị ala na-egbu egbu maka mkpuchi ụlọ ọrụ mmepụta ihe na ụlọ ọrụ ọgwụ.DMC abụghị naanị na ọ dị ala na nsị, kamakwa ọ nwere njirimara nke nnukwu ọkụ ọkụ, obere ikuku ikuku na njedebe mgbawa dị ala na ikuku, ya mere ọ bụ ihe mgbaze na-acha akwụkwọ ndụ na-ejikọta ịdị ọcha na nchekwa.
(4) Ihe mgbakwunye mmanụ ụgbọala
DMC nwere ihe onwunwe nke ọdịnaya oxygen dị elu (ihe ruru 53% oxygen na molecule), mmetụta dị mma na-eme ka octane dịkwuo mma, enweghị nkewa nkewa, obere nsị na ngwa ngwa biodegradability, ma na-ebelata ọnụ ọgụgụ nke hydrocarbons, carbon monoxide na formaldehyde n'ime ụgbọala iyuzucha. .Tụkwasị na nke ahụ, ọ na-emerikwa adịghị ike nke ihe mgbakwunye mmanụ ụgbọala ndị a na-ejikarị eme ihe na mmiri na-emetọ ebe mmiri dị n'ime ala.Ya mere, DMC ga-abụ otu n'ime mmanụ ụgbọala nwere ike dochie MTBE.
Nchekwa na Ụgbọ njem nke Dimethyl Carbonate
Akpachara anya nchekwa:Ọ na-ere ọkụ, uzuoku ya na ikuku na-agwakọtakwa ya, nke nwere ike ịmepụta ngwakọta mgbawa.Chekwaa ya n'ụlọ nkwakọba ihe dị jụụ, kpọrọ nkụ na nke ikuku na-ekpo ọkụ na-adịghị ere ọkụ.Wepụ ọkụ na isi mmalite okpomọkụ.Okpomọkụ ọbá akwụkwọ ekwesịghị ịfe 37 ℃.Debe akpa ahụ nke ọma.Ekwesịrị ịchekwa ya iche site na oxidants, ndị na-ebelata ihe, acid, wdg, ma ghara ịgwakọta ya.Jiri ọkụ na-egbochi mgbawa na ikuku ikuku.Machibido iji akụrụngwa na akụrụngwa na-enwekarị ọkụ ọkụ.Ebe nchekwa ahụ kwesịrị ịbụ ihe akụrụngwa ọgwụgwọ mberede na-agbapụta na ihe ndị kwesịrị ekwesị, nke a ga-echekwa n'ụlọ nkwakọba ihe dị jụụ, kpọrọ nkụ na nke ikuku na-ekpo ọkụ.
Akpachara anya njem:Ụzọ nkwakọ ngwaahịa mmiri ọkụ na-ere ọkụ igbe igbe osisi a na-ahụkarị n'èzí ampoules;Igbe osisi nkịtị n'èzí karama screw-top, karama iko ígwè, karama rọba ma ọ bụ orù ọla (mkpọ) Nchekwa njem ụgbọ njem ngwa ọgụ ọkụ na mgbapụ ngwa ngwa ọgwụgwọ ihe mberede kwesịrị ịbụ nke nwere ụdị na nha nha nha.
Oge nzipu: Sep-07-2022