Dimethyl kaboneti CAS: 616-38-6
Dimethyl kaboneti (DMC), ohun elo aise kemikali pẹlu majele kekere, iṣẹ aabo ayika ti o dara julọ ati ohun elo jakejado, jẹ agbedemeji pataki fun iṣelọpọ Organic.Ilana molikula rẹ ni awọn ẹgbẹ iṣẹ bii carbonyl, methyl ati methoxy, ati pe o ni ọpọlọpọ ifaseyin.O ni awọn abuda ti ailewu lilo, wewewe, kere idoti ati irọrun gbigbe ni gbóògì.Dimethyl carbonate jẹ ọja kemikali “alawọ ewe” ti o ni ileri nitori iloro kekere rẹ.
Ilana molikula: C3H6O3;(CH3O) 2CO;CH3O-COOCH3
iwuwo molikula: 90.07
CASno.: 616-38-6
EINECS nọmba: 210-478-4
Lilo iseda Awọn ohun-ini ti o dara julọ ati eto molikula pataki ti DMC pinnu ohun elo rẹ jakejado, eyiti o le ṣe akopọ bi atẹle:
Rọpo phosgene ti a ṣe pọ bi oluranlowo carbonylation.
Botilẹjẹpe phosgene (Cl-CO-Cl) ni ifaseyin giga, majele ti o ga pupọ ati awọn ọja ipata jẹ ki o dojukọ titẹ ayika nla, nitorinaa yoo yọkuro diẹdiẹ.DMC(CH3O-CO-OCH3) ni ile-iṣẹ ifaseyin nucleophilic kan.Nigbati ẹgbẹ carbonyl ti DMC ti kọlu nipasẹ awọn nucleophiles, ifunmọ acyl-oxygen fọ lati ṣẹda awọn agbo ogun carbonyl, ati ọja nipasẹ-ọja jẹ kẹmika.Nitorinaa, DMC le rọpo phosgene bi reagent aabo ailewu lati ṣajọpọ awọn itọsẹ carbonic acid, gẹgẹ bi awọn ipakokoropaeku carbamate, polycarbonates, isocyanates, ati bẹbẹ lọ, laarin eyiti polycarbonate yoo jẹ aaye pẹlu ibeere ti o tobi julọ fun DMC.O jẹ asọtẹlẹ pe ni ọdun 2005.
Rọpo dimethyl sulfate ti a ṣe pọ bi aṣoju methylating.
Fun awọn idi ti o jọra si phosgene, dimethyl sulfate (CH3O-SO-OCH3) tun n dojukọ titẹ imukuro.Nigbati carbon methyl ti DMC ti kọlu nipasẹ awọn nucleophiles, iwe adehun alkyl-oxygen rẹ ti bajẹ ati pe awọn ọja methylated tun jẹ ipilẹṣẹ.Pẹlupẹlu, ikore esi ti DMC ga julọ ati pe ilana naa rọrun ju ti dimethyl sulfate.Awọn lilo akọkọ pẹlu iṣelọpọ awọn agbedemeji Organic, awọn ọja elegbogi, awọn ọja ipakokoropaeku, ati bẹbẹ lọ.
