Dimethyl Carbonate Bakeng sa Tšimo ea Liindasteri
Index ea Theknoloji
| Lintho | Yuniti | Standard | Sephetho |
| Ponahalo | - | Seela se se nang mmala le se bonaletsang | |
| Litaba | % | Min99.5 | 99.91 |
| Methanol | % | Max0.1 | 0.006 |
| Mongobo | % | Max0.1 | 0.02 |
| Asiti (CH3COOH) | % | Max0.02 | 0.01 |
| Boima ba @20ºC | g/cm3 | 1.066-1.076 | 1.071 |
| Mmala, Pt-Co | APHA Color | Max10 | 5 |
Tšebeliso
E 'ngoe ea melemo ea mantlha ea DMC ke bokhoni ba eona ba ho nka sebaka sa phosgene joalo ka moemeli oa carbonylating, ho fana ka mokhoa o sireletsehileng le o seng kotsi ho feta oa tikoloho. Phosgene e beha kotsi e kholo maphelong a batho le tikolohong ka lebaka la chefo ea eona. Ka ho sebelisa DMC ho e-na le phosgene, bahlahisi ba ke ke ba ntlafatsa litekanyetso tsa tšireletso feela, empa hape ba kenya letsoho ho hlahisa mokhoa o motala, o hloekileng.
Ho feta moo, DMC e ka sebetsa e le sebaka se setle sa methylating agent dimethyl sulfate. Dimethyl sulfate ke motsoako o chefo haholo o bakang kotsi e kholo ho basebetsi le tikolohong. Ho sebelisa DMC joalo ka moemeli oa methylating ho felisa likotsi tsena ha ho ntse ho fana ka liphetho tse tšoanang. Sena se etsa hore DMC e be e loketseng liindasteri tse hlahisang meriana, lik'hemik'hale tsa temo le lik'hemik'hale tse ling tsa methyl-critical.
Ntle le melemo e boletsoeng ka holimo, DMC e boetse e ipabola e le solvent e tlase ea chefo, e etsang hore e be khetho e khahlehang bakeng sa lits'ebetso tse fapaneng. Chefo ea eona e tlase e tiisa tikoloho e sireletsehileng ea mosebetsi, e fokotsang kotsi ea ho pepeseha ha basebetsi le bareki linthong tse kotsi. Ho feta moo, ho qhibiliha ho hoholo ha DMC le ho lumellana ho pharaletseng le lisebelisoa tse fapaneng ho e etsa motsoako oa bohlokoa tlhahisong ea tlatsetso ea peterole. Ho sebelisa DMC joalo ka solvent bakeng sa li-additives tsa mafura ho ntlafatsa ts'ebetso e akaretsang ea ho tuka ha peterole, e fokotsang mesi le ho ntlafatsa ts'ebetso ea enjine.
Qetellong, dimethyl carbonate (DMC) ke mokhoa o fapaneng le o tsitsitseng oa metsoako ea setso. Tšireletseho, boiketlo ba eona, chefo e tlaase le ho lumellana ho etsa hore DMC e be e loketseng bakeng sa mefuta e mengata ea likopo. Ka ho nkela phosgene le dimethyl sulfate sebaka, DMC e fana ka khetho e sireletsehileng, e tala ntle le ho senya ts'ebetso. Ebang e sebelisoa e le moemeli oa carbonylating, methylating agent, kapa low-toxicity solvent, DMC ke tharollo e tšepahalang bakeng sa liindasteri tse batlang ho ntlafatsa lihlahisoa le mekhoa ha li ntse li fokotsa tšusumetso ea tikoloho.
