Bayani:

Dimethyl carbonate, wanda aka fi sani da DMC, ruwa ne mara launi, mai haske, mai ƙamshi mai kamshi a zafin ɗaki. Yawan da ke tsakanin (d204) shine 1.0694, wurin narkewa shine 4℃, wurin tafasa shine 90.3℃, kuma wurin walƙiya shine 21.7℃ (buɗewa) 16.7℃ (Baki rufe), ma'aunin amsawa (nd2Chemicalbook0)1.3687, mai ƙonewa, ba mai guba ba. Ana iya haɗa shi da kusan dukkanin abubuwan narkewa na halitta kamar alcohols, ketones, da esters a kowane rabo, kuma yana narkewa kaɗan a cikin ruwa. Ana iya amfani da shi azaman reagent methylating. Idan aka kwatanta da sauran reagent methylating, kamar methyl iodide da dimethyl sulfate, dimethyl carbonate ba shi da guba kuma ba zai iya lalata ba.

Kayayyakin Sinadarai

Ruwa mara launi da haske mai ƙamshi. Ba ya narkewa a cikin ruwa, yana narkewa a cikin sinadarai masu narkewa kamar ethanol da ether.

amfani

1. Wani sabon nau'in sinadarin narkewa mai ƙarancin guba zai iya maye gurbin toluene, xylene, ethyl acetate, butyl acetate, acetone ko methyl ethyl ketone da sauran sinadarai masu narkewa a masana'antar fenti da manne. Samfurin sinadarai ne masu kare muhalli.

2. Kyakkyawan wakili mai hana methylation, wakilin carbonylating, wakilin hydroxymethylating da wakilin methoxylating. Ana amfani da shi sosai a fannin antioxidants na abinci, wakilan kare tsirrai da sauran fannoni. Kayan sinadarai ne da ake amfani da su sosai.

3. Madadin sinadarai masu guba kamar su phosgene, dimethyl sulfate, Chemicalbook methyl chloroformate, da sauransu.

4. Haɗa polycarbonate, diphenyl carbonate, isocyanate, da sauransu.

5. A fannin magani, ana amfani da shi wajen haɗa magungunan hana kamuwa da cuta, magungunan rage kumburi da rage raɗaɗi, magungunan bitamin, da magungunan tsarin jijiyoyi na tsakiya.

6. Dangane da magungunan kashe kwari, ana amfani da shi ne musamman don samar da methyl isocyanate, sannan kuma don samar da wasu magungunan carbamate da magungunan kashe kwari (anisole).

7. Ƙarin mai, batirin lithium electrolyte, da sauransu.

Ana samun hanyar samarwa ta hanyar mayar da martani ga methyl chloroformate da methanol. Ana samun methyl chloroformate da aka yi amfani da shi a cikin amsawar ta hanyar amsawar methanol da phosgene. A lokacin shiri, ana iya haɗa wannan samfurin phosgenation ta hanyar ƙara yawan methanol da kuma sake mayar da martanin ba tare da rabuwa ba don haɗa dimethyl carbonate. Ana kiran martanin da ke sama hanyar phosgene ta gargajiya a cikin Littafin Kimiyya. Hanyar transesterification ta ƙunshi amsawar transesterification tsakanin ethylene carbonate ko propylene carbonate da methanol don samar da dimethyl carbonate. Wannan hanyar tana da yawan amfanin ƙasa, ƙarancin kayan aiki na lalata, da kuma yanayin amsawa mai sauƙi. Duk da haka, tushen kayan yana da iyaka ta hanyar haɓaka masana'antar mai kuma ƙimar amfani da abubuwan yana da ƙasa.

Bayanin hulda