Dimethyl carbonate CAS 616-38-6
Kaarboonaytka Dimethyl, oo loo yaqaan DMC, waa dareere aan midab lahayn, oo hufan oo leh ur kulul heerkulka qolka. Cufnaanta qaraabada ah (d204) waa 1.0694, barta dhalaalkeedu waa 4°C, barta karkaraya waa 90.3°C, dhibicdeeduna waa 21.7°C (furan) iyo 16.7°C ( xidhan), index refractive (nd20) waa 1.3687, waana mid aan guban karin oo sun ah. Waxaa lagu qasi karaa ku dhawaad dhammaan dareerayaasha dabiiciga ah sida alkolada, ketones, iyo ester-ka qayb kasta oo ay ku milmi karaan biyaha. Waxaa loo isticmaali karaa sida wakiilka methylating. Marka la barbar dhigo wakiilada kale ee methylating, sida methyl iodide iyo dimethyl sulfate, dimethyl carbonate way ka yar tahay sunta waxayna noqon kartaa biodegraded.
| ITEM | BATTERYGRADE | FARSAMADA WARSHADAHA | |
| Muuqashada | Midab la'aan, dareere hufan, ma jirto wasakh farsamo oo muuqda | ||
| Nuxurka ≥ | 99.99% | 99.95% | 99.9% |
| Qoyaanka ≤ | 0.005% | 0.01% | 0.05% |
| Maadada Methanol≤ | 0.005% | 0.05% | 0.05% |
| Cufnaanta (20°C) g/ml | 1.071± 0.005 | 1.071± 0.005 | 1.071± 0.005 |
| Midabka≤ | 10 | 10 | 10 |
Dimethyl carbonate (DMC) waxay leedahay qaab-dhismeedka kelli gaar ah (CH3O-CO-OCH3). Qaab dhismeedkeeda kelli waxa uu ka kooban yahay carbonyl, methyl, methoxy iyo carbonylmethoxy. Sidaa darteed, waxaa si weyn loogu isticmaali karaa falcelinta synthesis organic sida carbonylation, methylation, methoxylation iyo carbonylmethylation. Waxay leedahay adeegsi aad u ballaaran. Waxaa inta badan loo isticmaalaa sidii carbonylation iyo reagent methylation, wax lagu daro gaaska, iyo walxo cayriin ah oo loogu talagalay abuurka polycarbonate (PC). Wax soo saarka ballaaran ee DMC ayaa la soo saaray iyada oo la socota habka isku-dhafka fosgene-ka ee polycarbonate. Adeegsigeedu waa sida soo socota:
1. Nooc cusub oo dareere sun yar ah ayaa bedeli kara dareerayaasha sida toluene, xylene, ethyl acetate, butyl acetate, acetone ama butanone ee rinjiga iyo warshadaha dhejiska. Waa wax soo saar kiimiko ah oo cagaaran oo deegaanka u wanaagsan.
2. Wakiilka methylating ee wanaagsan, wakiilka carbonylating, wakiilka hydroxymethylating iyo wakiilka methoxylating. Waxaa si weyn loogu isticmaalaa beeraha antioxidants cuntada, wakiilada ilaalinta dhirta, iwm. Waa walxo kiimiko ah oo si weyn loo isticmaalo.
3. Beddel ku habboon daawooyinka sunta ah sida fosgene, dimethyl sulfate, iyo chloroformate methyl.
4. Isku-dubarid polycarbonate, carbonate diphenyl, isocyanate, iwm.
5. Daawada, waxaa loo isticmaalaa in lagu farsameeyo dawooyinka ka hortagga caabuqa, dawooyinka antipyretic iyo analgesic, dawooyinka fitamiinada, iyo daawooyinka habdhiska dhexe ee neerfayaasha.
6. Sunta cayayaanka, inta badan waxaa loo isticmaalaa in lagu soo saaro methyl isocyanate, ka dibna si loo soo saaro qaar ka mid ah daawooyinka carbamate iyo cayayaanka (anisole).
7. Waxyaabaha lagu daro shidaalka, batariyada lithium electrolytes, iwm.
200kg/durbaan
Dimethyl carbonate CAS 616-38-6
Dimethyl carbonate CAS 616-38-6
