Dimethyl carbonate CAS: 616-38-6
Dimethyl carbonate (DMC), wani ɗanyen sinadari tare da ƙarancin guba, kyakkyawan aikin kariyar muhalli da aikace-aikace mai fa'ida, yana da mahimmancin tsaka-tsaki don haɓakar ƙwayoyin cuta.Tsarin kwayoyin halittarsa ya ƙunshi ƙungiyoyi masu aiki kamar carbonyl, methyl da methoxy, kuma yana da amsawa iri-iri.Yana da halaye na amintaccen amfani, dacewa, ƙarancin ƙazanta da sauƙin sufuri a cikin samarwa.Dimethyl carbonate shine samfurin sinadarai "kore" mai ban sha'awa saboda ƙarancin guba.
Tsarin kwayoyin halitta: C3H6O3;(CH3O) 2 CO;CH3O-COOCH3
Nauyin Kwayoyin: 90.07
Saukewa: 616-38-6
Lambar EINECS: 210-478-4
Amfanin yanayi Kyakkyawan kaddarorin da tsarin kwayoyin halitta na musamman na DMC sun ƙayyade aikace-aikacensa mai fa'ida, wanda za'a iya taƙaita shi kamar haka:
Maye gurbin phosgene mai naɗewa azaman wakilin carbonylation.
Ko da yake phosgene (Cl-CO-Cl) yana da haɓaka mai yawa, samfuransa masu guba da lalata sun sa ya fuskanci babban matsin muhalli, don haka a hankali za a kawar da shi.DMC(CH3O-CO-OCH3) yana da irin wannan cibiyar amsawar nucleophilic.Lokacin da ƙungiyar carbonyl ta DMC ta kai hari ta hanyar nucleophiles, haɗin gwiwar acyl-oxygen ya karya don samar da mahadi na carbonyl, kuma samfurin shine methanol.Saboda haka, DMC na iya maye gurbin phosgene a matsayin amintaccen amsawa don haɗa abubuwan da suka samo asali na carbonic acid, irin su carbamate pesticides, polycarbonates, isocyanates, da sauransu, wanda polycarbonate zai zama filin tare da mafi girman buƙatar DMC.An yi hasashen cewa a shekara ta 2005.
Sauya dimethyl sulfate mai naɗewa azaman wakili na methylating.
Don dalilai masu kama da phosgene, dimethyl sulfate (CH3O-SO-OCH3) kuma yana fuskantar matsin lamba.Lokacin da methyl carbon na DMC ke kaiwa hari ta hanyar nucleophiles, haɗin alkyl-oxygen ya karye kuma ana samar da samfuran methylated.Bugu da ƙari, yawan amsawar DMC ya fi girma kuma tsarin ya fi sauƙi fiye da na dimethyl sulfate.Babban amfani sun haɗa da haɗakar da masu tsaka-tsakin kwayoyin halitta, samfuran magunguna, samfuran magungunan kashe qwari, da sauransu.
