Sodium ethoxide (Sodium ethoxide 20% daws)
| Tshuaj xwm | Dawb los yog daj hmoov;hygroscopic;darkens thiab decomposes thaum raug huab cua;decomposes hauv dej tsim sodium hydroxide thiab ethanol;dissolves nyob rau hauv kiag li ethanol.Reacts nruj nrog acids, dej.Incompatible nrog chlorinated kuab tshuaj, noo noo.Absorbs carbon dioxide los ntawm huab cua.Cov nplaim taws heev. | |
| Daim ntawv thov | Sodium ethoxide yog siv rau hauv cov organic synthesis rau condensation tshua.Nws kuj yog ib qho catalyst hauv ntau cov tshuaj tiv thaiv organic. Sodium ethoxide, 21% w / w hauv ethanol yog siv los ua lub hauv paus muaj zog hauv cov organic synthesis.Nws pom daim ntawv thov nyob rau hauv ntau yam tshuaj tiv thaiv xws li condensation, esterification, alkoxylation thiab etherifcation.Nws nquag koom nrog Claisen condensation, Stobbe cov tshuaj tiv thaiv thiab txo Hma-kishner.Nws yog ib qho tseem ceeb pib cov khoom siv rau kev sib txuas ntawm ethyl ester thiab diethyl ester ntawm malonic acid.Hauv Williamson ether synthesis, nws reacts nrog ethyl bromide los tsim diethyl ether. | |
| Txee lub neej | Raws li peb cov kev paub dhau los, cov khoom tuaj yeem khaws cia rau 12Lub hlis txij li hnub xa khoom yog khaws cia rau hauv cov thawv kaw ntom ntom, tiv thaiv lub teeb thiab kub thiab khaws cia ntawm qhov kub ntawm 5 -30 ° C. | |
| HazardClass | 4.2 | |
| PackingGroup | II | |
| Typical zog
| Melting point | 260 ° C |
| Boiling point | 91 ° C | |
| ceev | 0.868 g / mL ntawm 25 ° C | |
| vapor ceev | 1.6 (vs dej) | |
| vapor siab | 0.1 hli Hg (20 ° C) | |
| Refractive Index | N20/D 1.386 | |
| Fp | 48 ° F | |
| cia temp. | Khaws ntawm + 15 ° C rau + 25 ° C. | |
| solubility | Soluble hauv ethanol thiab methanol. | |
| daim ntawv | Ua kua | |
| Specific Gravity | 0.868 ib | |
| xim | Yellow rau xim av | |
| PH | 13 (5g / l, H2O, 20 ℃) | |
| Dej Solubility | Miscible | |
| rhiab heev | Moisture Sensitive | |
Kev nyab xeeb
Thaum tuav cov khoom no, thov ua raws li cov lus qhia thiab cov ntaub ntawv muab rau hauv daim ntawv qhia kev nyab xeeb thiab ua raws li kev tiv thaiv thiab kev tu cev hauv chaw ua haujlwm kom tsim nyog rau kev siv tshuaj.
Nco tseg
Cov ntaub ntawv muaj nyob rau hauv qhov kev tshaj tawm no yog nyob ntawm peb cov kev paub thiab kev paub tam sim no.Nyob rau hauv kev pom ntawm ntau yam uas yuav cuam tshuam rau kev ua thiab kev siv ntawm peb cov khoom, cov ntaub ntawv no tsis txo cov processors los ntawm kev ua lawv tus kheej kev tshawb nrhiav thiab kev sim;Tsis yog cov ntaub ntawv no txhais tau tias muaj kev lav phib xaub ntawm qee yam khoom, lossis qhov tsim nyog ntawm cov khoom rau ib lub hom phiaj tshwj xeeb.Cov lus piav qhia, kos duab, duab, cov ntaub ntawv, qhov sib npaug, qhov hnyav, thiab lwm yam uas tau muab rau hauv no tuaj yeem hloov pauv yam tsis muaj cov ntaub ntawv ua ntej thiab tsis suav nrog kev cog lus zoo ntawm cov khoom.Qhov kev pom zoo cog lus zoo ntawm cov khoom lag luam tsuas yog los ntawm cov lus hais hauv cov khoom specification.Nws yog lub luag haujlwm ntawm tus neeg tau txais kev pabcuam ntawm peb cov khoom los xyuas kom meej tias txhua tus tswvcuab cov cai thiab cov cai thiab kev cai lij choj uas twb muaj lawm raug pom zoo.
