Trimethyl borate/CAS: 121-43-7
Kev Piav Qhia Luv:
Lub Npe Khoom: Trimethyl borate
CAS: 121-43-7
Hom: ZA-Y
MF:C3H9BO3
MW:103.91
QAUV:
Kev piav qhia:
Trimethyl borate zoo li kua dej dawb. Ntom dua dej. Cov pa hnyav dua huab cua. Siv ua cov tshuaj yaj thiab tshuaj tua kab mob rau txiv hmab txiv ntoo.
Kev Qhia Tshwj Xeeb:
| Khoom | Cov Lus Qhia Tshwj Xeeb |
| Qhov kub yaj | -34 °C (lit.) |
| Kub taw tes | 68-69 °C (lit.) |
| Qhov Ceev | 0.932 g/mL ntawm 20 °C (lit.) |
| Qhov ceev ntawm cov pa dej | 3.59 (piv rau huab cua) |
| Lub zog ua pa | 147.9-148 hPa ( 20 ° C ) |
| Fp | 8 °F |
| Cov ntsuas kev cuam tshuam | n20/D 1.358(lit.) |
| Cia txias. | Khaws cia rau <= 20°C. |
| Kev yaj tau | Sib xyaw nrog tetrahydrofuran, ether, isoporpylamine, hexane thiab methanol. |
| Daim Ntawv | Kua |
| Xim | Tsis muaj xim |
Kev Siv
Trimethyl borate yog ib qho tshuaj reagent uas muaj txiaj ntsig zoo hauv kev tsim cov organic. Nws koom nrog hauv kev tsim cov resins, waxes thiab xim thiab ua haujlwm ua tus neeg sawv cev methylation. Ua ib qho chaw boron, Trimethyl borate yog siv los npaj cov tshuaj tua hluav taws, cov tshuaj tiv thaiv oxidants thiab cov tshuaj tiv thaiv xeb. Nws reacts nrog Grignard reagents ua raws li hydrolysis los npaj boronic acid. Nws kuj tseem siv ua tus precursor ntawm borate esters, uas pom daim ntawv thov hauv Suzuki coupling reaction. Nws yog siv ua neutron detector roj nyob rau hauv lub xub ntiag ntawm scintillation counter; ua tus txhawb nqa ntawm diborane reactions.
Trimethyl borate ua rau muaj kev sib xyaw nrog Grignard reagent lossis organolithium compounds kom tau dimethyl boronates, uas tom qab ntawd kho cov kua qaub hauv dej ua rau muaj cov kua qaub boronic sib xws. Cov kua qaub boronic lossis esters uas tshwm sim yog cov khoom siv nruab nrab hauv ntau yam kev sib txuas sib txuas xws li Suzuki coupling thiab Chan-Lam coupling. Nws kuj tseem siv rau hauv kev npaj sodium borohydride.
Ntim thiab Xa Khoom
180KG / Nruas los yog raws li cov neeg siv khoom xav tau.
Yog cov khoom siv dav dav thiab tuaj yeem xa los ntawm dej hiav txwv thiab huab cua
Khaws cia thiab khaws cia
Lub neej txee: 24 lub hlis txij li hnub tsim khoom hauv cov ntim khoom tsis tau qhib khaws cia rau hauv qhov chaw txias thiab qhuav kom tsis txhob raug tshav ntuj ncaj qha, dej.
Khaws cia rau hauv qhov chaw txias, qhuav, thiab muaj cua nkag tau zoo. Nyob deb ntawm cov qhov chaw uas muaj hluav taws thiab cua sov. Qhov kub ntawm kev khaws cia yuav tsum tsis pub tshaj 30 ℃. Khaws lub thawv kom kaw. Nws yuav tsum khaws cia cais ntawm cov tshuaj oxidants, acids, thiab lwm yam, thiab tsis txhob sib xyaw ua ke.
