He aha ka Dimethyl carbonate?

ʻO ka dimethyl carbonate he mea hoʻohui kino me ke ʻano kemika C3H6O3.He mea kemika ia me ka haʻahaʻa haʻahaʻa, ka maikaʻi o ka mālama ʻana i ke kaiapuni a me ka nui o ka hoʻohana ʻana.He mea koʻikoʻi koʻikoʻi koʻikoʻi koʻikoʻi koʻikoʻi.Loaʻa iā ia nā ʻano o ka pollution liʻiliʻi a me ka maʻalahi o ka lawe ʻana.ʻO ke ʻano o ka dimethyl carbonate he wai kala ʻole me ka ʻala ʻala;ʻO ke kaumaha molekala he 90.078, hiki ʻole ke hoʻoheheʻe ʻia i loko o ka wai, hiki ke hoʻoheheʻe ʻia i loko o ka hapa nui o nā mea hoʻoheheʻe kūlohelohe, hiki ke hoʻopili i nā ʻakika a me nā kumu.

Hoʻohana i ka dimethyl carbonate

(1) E hoʻololi i ka phosgene ma ke ʻano he mea hana carbonylating
He kikowaena nucleophilic like ko DMC.Ke hoʻouka ʻia ka pūʻulu carbonyl o DMC e kahi nucleophile, ua haki ka paʻa acyl-oxygen e hana i kahi pūhui carbonyl, a ʻo ka huahana ka methanol.No laila, hiki iā DMC ke hoʻololi i ka phosgene ma ke ʻano he reagent palekana e synthesize i nā derivatives carbonic acid., ʻO Polycarbonate ka wahi me ka koi nui loa no DMC.

(2) E hoʻololi i ka dimethyl sulfate ma ke ʻano he methylating agent
Ke hoʻouka ʻia ka methyl carbon o DMC e kahi nucleophile, ua haki kona paʻa alkyl-oxygen, a ua hana pū ʻia kahi huahana methylated, a ʻoi aku ka kiʻekiʻe o ka hopena o ka DMC ma mua o ka dimethyl sulfate, a ʻoi aku ka maʻalahi o ka hana.ʻO ka hoʻohana nui ʻana i nā intermediates organik synthetic, nā huahana lāʻau lapaʻau, nā huahana pesticide, etc.

(3) haʻahaʻa toxicity solvent
DMC i maikai solubility, haiki hehee a me ka paila wahi pae, nui o ka ili, haʻahaʻa viscosity, haʻahaʻa dielectric mau, kiʻekiʻe evaporation ana wela a me ka wikiwiki evaporation rate, no laila, hiki ke hoʻohana 'ia e like me ka haʻahaʻa-ʻawaʻawa'ūheheʻe no ka coatings Industrial a me pharmaceutical oihana.ʻAʻole wale ka haʻahaʻa o ka DMC, akā loaʻa nō hoʻi nā hiʻohiʻona o ke kiko uila kiʻekiʻe, ke kaomi haʻahaʻa haʻahaʻa a me ka palena o ka pahū haʻahaʻa i ka lewa, no laila he ʻōmaʻomaʻo e hui pū i ka maʻemaʻe a me ka palekana.

(4) Nā mea hoʻohui ʻaila
Loaʻa i ka DMC nā waiwai o ka maʻiʻo oxygen kiʻekiʻe (a hiki i ka 53% oxygen content i loko o ka mole), ka hopena hoʻonui octane maikaʻi loa, ʻaʻohe māhele kaʻawale, haʻahaʻa haʻahaʻa a me ka biodegradability wikiwiki, a hoʻemi i ka nui o nā hydrocarbons, carbon monoxide a me formaldehyde i loko o ka pauku kaʻa. .Eia kekahi, ua lanakila ʻo ia i nā hemahema o nā mea hoʻohui ʻaila maʻamau i maʻalahi i ka wai a hoʻohaumia i nā kumu wai honua.No laila, e lilo ʻo DMC i hoʻokahi o nā mea hoʻohui ʻaila nui loa e hoʻololi i ka MTBE.

Ka mālama ʻana a me ka lawe ʻana o Dimethyl Carbonate

Nā mālama mālama:Hiki ke ahi, a hui pū kona mahu me ka ea, hiki ke hana i kahi hui pahū.E mālama iā ia i loko o kahi hale kūʻai maloʻo, maloʻo, a maikaʻi hoʻi i hoʻoheheʻe ʻia.E mālama i ke ahi a me nā kumu wela.ʻAʻole pono ka mahana o ka waihona ma mua o 37 ℃.Paʻa paʻa ka ipu.Pono e hoʻokaʻawale ʻia mai nā oxidants, nā mea hoʻohaʻahaʻa, nā waikawa, a me nā mea ʻē aʻe, a ʻaʻole pono e hui pū ʻia.E hoʻohana i nā kukui pahū a me nā keʻena ea.E pāpā i ka hoʻohana ʻana i nā mea hana mīkini a me nā mea hana e pili ana i ka ʻā.Pono e hoʻolako ʻia ka wahi e mālama ai me nā lako lapaʻau pilikia leakage a me nā mea hoʻopaʻa pono kūpono, pono e mālama ʻia i loko o kahi hale kūʻai maloʻo a maloʻo maikaʻi ʻole.

ʻO ka mālama ʻana i ka halihali:Pākuʻi Māka Flammable Liquid Packaging Method Pahu lāʻau maʻamau ma waho o nā ampoules;Pahu lāʻau maʻamau ma waho o nā ʻōmole aniani wili, nā ʻōmole aniani i uhi ʻia i ka hao, nā ʻōmole plastik a i ʻole nā ​​pahu metala (kani) ʻO ka mālama ʻana i ke kaʻa kaʻa kaʻa e hoʻolako ʻia me nā ʻano like ʻole a me nā nui.