Dimethyl carbonate CAS 616-38-6
ʻO Dimethyl carbonate, i kapa ʻia ʻo DMC, he wai aniani ʻole, me kahi ʻala ʻawaʻawa i ka mahana o ka lumi. ʻO kona density pili (d204) he 1.0694, ʻo kona wahi heheʻe he 4°C, ʻo kona wahi paila he 90.3°C, ʻo kona wahi lapalapa he 21.7°C (hāmama) a me 16.7°C (pani ʻia), ʻo kona index refractive (nd20) he 1.3687, a he mea lapalapa a ʻaʻohe ʻawaʻawa. Hiki ke hoʻohuihui ʻia me nā mea hoʻoheheʻe organik āpau e like me nā alcohols, ketones, a me nā esters i kēlā me kēia ʻano a he mea hoʻoheheʻe iki i ka wai. Hiki ke hoʻohana ʻia ma ke ʻano he mea methylating. Ke hoʻohālikelike ʻia me nā mea methylating ʻē aʻe, e like me ka methyl iodide a me ka dimethyl sulfate, ʻoi aku ka liʻiliʻi o ka ʻawaʻawa o ka dimethyl carbonate a hiki ke biodegraded.
| MEA | PĀKAHIPAPA | PAPA ʻOIHANA | |
| helehelena | Wai ʻole kala, moakāka, ʻaʻohe haumia mechanical i ʻike ʻia | ||
| ʻIkepili ≥ | 99.99% | 99.95% | 99.9% |
| Ka makū ≤ | 0.005% | 0.01% | 0.05% |
| ʻIke Methanol≤ | 0.005% | 0.05% | 0.05% |
| Ka nui (20°C)g/ml | 1.071±0.005 | 1.071±0.005 | 1.071±0.005 |
| Waihoʻoluʻu≤ | 10 | 10 | 10 |
He ʻano molekala kūikawā ko Dimethyl carbonate (DMC) (CH3O-CO-OCH3). Aia i loko o kona ʻano molekala nā hui carbonyl, methyl, methoxy a me carbonylmethoxy. No laila, hiki ke hoʻohana nui ʻia i nā hopena synthesis organik e like me ka carbonylation, methylation, methoxylation a me carbonylmethylation. He ākea loa kona mau hoʻohana. Hoʻohana nui ʻia ia ma ke ʻano he reagent carbonylation a me methylation, kahi mea hoʻohui gasoline, a me kahi mea maka no ka synthesizing polycarbonate (PC). Ua hoʻomohala ʻia ka hana nui ʻana o DMC me ke kaʻina hana synthesis non-phosgene o ka polycarbonate. Eia kāna mau hoʻohana:
1. Hiki i kahi ʻano hou o ka mea hoʻoheheʻe haʻahaʻa-ʻawahia ke pani i nā mea hoʻoheheʻe e like me toluene, xylene, ethyl acetate, butyl acetate, acetone a i ʻole butanone i nā ʻoihana pena a me ka hoʻopili. He huahana kemika ʻōmaʻomaʻo aloha kaiapuni ia.
2. He mea methylating maikaʻi, mea carbonylating, mea hydroxymethylating a me ka mea methoxylating. Hoʻohana nui ʻia ia ma nā kahua o nā antioxidants meaʻai, nā mea pale mea kanu, a me nā mea ʻē aʻe. He mea maka kemika i hoʻohana nui ʻia.
3. He pani kūpono no nā lāʻau ʻawahia loa e like me ka phosgene, dimethyl sulfate, a me ka methyl chloroformate.
4. Hana i ka polycarbonate, diphenyl carbonate, isocyanate, a pēlā aku.
5. I ka lāʻau lapaʻau, hoʻohana ʻia ia e hana i nā lāʻau anti-infective, nā lāʻau antipyretic a me analgesic, nā lāʻau vitamina, a me nā lāʻau no ka ʻōnaehana nerve waena.
6. I loko o nā pesticides, hoʻohana nui ʻia ia e hana i ka methyl isocyanate, a laila e hana i kekahi mau lāʻau carbamate a me nā insecticides (anisole).
7. Nā mea hoʻohui kinoea, nā electrolytes pākahiko lithium, a pēlā aku.
200kg/pahu
Dimethyl carbonate CAS 616-38-6
Dimethyl carbonate CAS 616-38-6
