2 3 5-Tribromopyridine (CAS # 75806-85-8)
| Risk Codes | 34 – Ua rau kub hnyiab |
| Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S27 - Tshem tawm tag nrho cov khaub ncaws tsis huv tam sim ntawd. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. S45 - Thaum muaj xwm txheej lossis yog tias koj tsis xis nyob, nrhiav kev kho mob tam sim ntawd (qhia daim ntawv lo thaum twg ua tau.) |
| Hazard Class | IRRITANT, MOISTURE S |
Taw qhia
2,3,5-Tribromopyridine yog ib qho organic compound nrog cov tshuaj formula C5H2Br3N. Cov hauv qab no yog kev qhia txog qee yam ntawm nws cov khoom, kev siv, kev tsim thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
-Cov tsos mob: 2,3,5-Tribromopyridine yog xim tsis muaj xim rau daj ntseg daj.
-Solubility: Nws tsis yooj yim soluble hauv dej, tab sis tuaj yeem yaj hauv cov kuab tshuaj organic xws li chloroform, dichloromethane, thiab lwm yam.
-Melting point: 2,3,5-Tribromopyridine muaj qhov melting point ntawm 112-114 ° C.
Siv:
- 2,3,5-Tribromopyridine feem ntau yog siv los ua ib qho reagent thiab nruab nrab hauv cov organic synthesis.
-Nws yog dav siv nyob rau hauv lub teb ntawm tshuaj synthesis, tshuaj tua kab manufacturing thiab dye npaj.
-Tsis tas li ntawd, nws tseem tuaj yeem siv los ua cov khoom pib rau kev sib txuas ntawm cov hlau organic sib txuas (xws li kev sib koom tes polymers thiab cov ntaub ntawv photoelectric).
Txoj Kev Npaj:
Txoj kev npaj ntawm 2,3,5-Tribromopyridine tuaj yeem ua tiav los ntawm cov kauj ruam hauv qab no:
Ua ntej, pyridine yog yaj hauv cov kuab tshuaj organic xws li dichloromethane lossis chloroform.
2. Ntxiv bromine rau cov tshuaj thiab ua kom sov cov tshuaj tiv thaiv.
3. Tom qab ua tiav cov tshuaj tiv thaiv, cov khoom brominated yog hydrolyzed los ntawm dropwise ntxiv dej.
4. Thaum kawg, cov khoom raug cais tawm thiab ua kom huv los ntawm kev pom, crystallization, thiab lwm yam.
Cov ntaub ntawv kev nyab xeeb:
- 2,3,5-Tribromopyridine yuav tsis ua teeb meem kev nyab xeeb raws li kev ua haujlwm ib txwm muaj.
-Nws tuaj yeem ua rau tawv nqaij, qhov muag thiab ua pa, yog li hnav cov khoom tiv thaiv tus kheej tsim nyog thaum siv nws.
-Saib cov txheej txheem kuaj kom raug thiab ntsuas kev nyab xeeb thaum tuav cov khoom sib xyaw no.
-Thaum khaws cia thiab tuav cov khoom sib xyaw, yuav tsum tau saib xyuas kom tsis txhob muaj oxidants, muaj zog acids, muaj zog hauv paus thiab lwm yam khoom.
Thov nco ntsoov tias cov ntaub ntawv saum toj no tsuas yog siv rau kev siv xwb. Thaum siv 2,3,5-Tribromopyridine lossis lwm yam tshuaj lom neeg, thov ua raws li cov lus pom zoo rau kev ua haujlwm nyab xeeb thiab siv kom raug, thiab nyeem thiab ua raws li cov ntaub ntawv kev nyab xeeb ntawm cov tshuaj muaj feem xyuam.
