Dimethyl carbonate CAS:616-38-6
Dimethyl carbonate (DMC), o se vailaʻau mataʻutia e maualalo le oona, lelei le puipuiga o le siosiomaga ma le lautele o le faʻaogaina, o se mea taua tele mo le faʻaogaina o meaola.O lona fausaga mole o lo'o iai vaega fa'atino e pei o le carbonyl, methyl ma le methoxy, ma e iai fo'i fa'agaioiga eseese.O loʻo i ai uiga o le faʻaogaina saogalemu, faigofie, faʻaitiitia le faʻaleagaina ma faigofie felauaiga i le gaosiga.O le Dimethyl carbonate ose oloa fa'ameaola "lanumeamata" fa'amoemoeina ona o lona maualalo oona.
fua mole: C3H6O3;(CH3O)2CO ;CH3O-COOCH3
mamafa mole: 90.07
CASNo.: 616-38-6
Numera EINECS: 210-478-4
Fa'aoga natura O meatotino sili ona lelei ma fa'apitoa mole mole o le DMC e fuafua ai lona fa'aoga lautele, lea e mafai ona aoteleina fa'apea:
Sui phosgene gaugau e fai ma sui carbonylation.
E ui lava o le phosgene (Cl-CO-Cl) e maualuga le gaioiga, o ona mea e sili ona oona ma faʻaleagaina e faʻafeiloaʻi ai le malosi o le siosiomaga, o lea o le a faasolosolo malie ona faʻaumatia.DMC(CH3O-CO-OCH3) ei ai se nofoaga autu tali tutusa nucleophilic.Pe a osofaʻia le vaega carbonyl o le DMC e nucleophiles, o le acyl-oxygen bond e malepe e fausia ai carbonyl compounds, ma o le mea e maua mai o le methanol.O le mea lea, e mafai e le DMC ona suitulaga i le phosgene e avea o se tali faʻafefe saogalemu e faʻapipiʻi ai mea e maua mai i le carbonic acid, e pei o vailaʻau faʻamaʻi, polycarbonates, isocyanates, ma isi, e aofia ai le polycarbonate o le fanua e sili ona manaʻomia mo DMC.O loo valoia mai i le 2005.
Sui le dimethyl sulfate gaugau e fai ma sui methylating.
Mo mafuaʻaga e tutusa ma le phosgene, dimethyl sulfate (CH3O-SO-OCH3) o loʻo feagai foi ma le mamafa o le faʻaumatia.Pe a osofaʻia le methyl carbon o le DMC e nucleophiles, o lona alkyl-oxygen bond e malepelepe ma faʻatupuina foi oloa methylated.E le gata i lea, o le gaioiga o le DMC e maualuga atu ma o le faagasologa e faigofie atu nai lo le dimethyl sulfate.O faʻaoga autu e aofia ai le faʻapipiʻiina o mea faʻalaʻau, vailaʻau vailaʻau, vailaau faʻasaina, ma isi.
