Tirohanga Whānui:

Ko te dimethyl carbonate, e kiia nei ko te DMC, he wai mārama, kāore he tae, he kakara kino i te pāmahana rūma. Ko te mātotoru whanaunga (d204) ko 1.0694, ko te ira rewa ko 4℃, ko te ira kohua ko 90.3℃, ā, ko te ira mura ko 21.7℃ (tuwhera) 16.7℃ (waha kati), taupū whakaata (nd2Chemicalbook0)1.3687, mura, kāore he paitini. Ka taea te whakaranu ki te nuinga o ngā whakarewa rauropi pēnei i te waipiro, te ketone, me ngā esters i roto i tētahi ōwehenga, ā, he paku wairewa ki te wai. Ka taea te whakamahi hei matū methylating. Ki te whakatauritea ki ētahi atu matū methylating, pēnei i te methyl iodide me te dimethyl sulfate, he iti ake te paitini o te dimethyl carbonate, ā, he pirau hoki.

Ngā Āhuatanga Matū

He wai mārama, kore tae, he kakara haunga. Kāore e rewa i te wai, engari e rewa ana i roto i ngā whakarewa waro pērā i te etanoru me te etera.

whakamahi

1. Ka taea e tētahi momo whakarewa iti-paitini hou te whakakapi i te toluene, te xylene, te ethyl acetate, te butyl acetate, te acetone, te methyl ethyl ketone rānei me ētahi atu whakarewa i roto i ngā ahumahi peita me te piri. He hua matū matomato e pai ana ki te taiao.

2. He pai te kaihopu methylation, te kaihopu carbonylating, te kaihopu hydroxymethylating me te kaihopu methoxylating. He whānuitia te whakamahinga i roto i ngā mara o ngā antioxidants kai, ngā kaihopu tiaki tipu me ētahi atu mara. He rauemi matū mata e whakamahia whānuitia ana.

3. He whakakapinga pai mō ngā matū tino paitini pērā i te phosgene, te dimethyl sulfate, te Chemicalbook methyl chloroformate, me ētahi atu.

4. Hangaia te polycarbonate, te diphenyl carbonate, te isocyanate, me ētahi atu.

5. I roto i te rongoā, e whakamahia ana hei hanga i ngā rongoā ārai-mate, ngā rongoā whakaheke wera me te whakamamae mamae, ngā rongoā huaora, me ngā rongoā pūnaha io matua.

6. Mō ngā patupatu, e whakamahia ana hei hanga i te methyl isocyanate, kātahi ka hanga i ētahi rongoā carbamate me ngā patupatu (anisole).

7. Ngā tāpiringa penehīni, te electrolyte pākahiko lithium, me ētahi atu.

Ka whiwhihia te tikanga whakaputa mā te tauhohenga o te methyl chloroformate me te methanol. Ko te rauemi mata methyl chloroformate e whakamahia ana i roto i te tauhohenga ka whiwhihia mā te tauhohenga o te methanol me te phosgene. I te wā e whakarite ana, ka taea hoki te hanga i tēnei hua phosgenation mā te tāpiri i te methanol nui me te refluxing i te tauhohenga me te kore e wehea hei hanga i te dimethyl carbonate. Ko te tauhohenga i runga ake nei ka kiia ko te tikanga phosgene tuku iho i roto i te Chemicalbook. Ko te tikanga transesterification e uru ana ki te tauhohenga transesterification i waenga i te ethylene carbonate, te propylene carbonate rānei me te methanol hei hanga i te dimethyl carbonate. He nui te hua o tēnei tikanga, he iti te waikura o ngā taputapu, ā, he ngawari ngā āhuatanga tauhohenga. Heoi, he iti te pūtake o ngā rauemi mata nā te whanaketanga o te umanga petrochemical, ā, he iti te tere whakamahinga huānga.

Ngā Mōhiohio Whakapā