3 5-DIBROMO-2-FLUOROPYRIDINE (CAS # 473596-07-5)
| Risk Codes | R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R25 - Toxic yog nqos |
| 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. S36 - Hnav khaub ncaws tiv thaiv zoo. 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 |
Taw qhia
3,5-Dibromo-2-fluoropyridine yog ib qho organic compound nrog cov tshuaj formula C5H2Br2FN. Cov hauv qab no yog cov lus piav qhia ntawm nws qhov xwm txheej, kev siv, kev tsim thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
- 3,5-Dibromo-2-fluoropyridine yog cov khoom sib xyaw nrog lub ntsej muag dawb crystalline.
-Nws lub ntsiab lus melting yog 74-76 ℃, thiab nws qhov kub kub yog 238-240 ℃.
-Nws yog insoluble hauv dej ntawm chav tsev kub, tab sis tuaj yeem yaj hauv qee cov kuab tshuaj organic xws li ether thiab ethanol.
Siv:
- 3,5-Dibromo-2-fluoropyridine yog ib qho tseem ceeb hauv nruab nrab cov khoom siv dav siv hauv cov tshuaj organic synthesis.
-Nws tuaj yeem siv los ua cov khoom siv raw rau cov ntaub ntawv organic photovoltaic, thiab tseem tuaj yeem siv los npaj cov tshuaj, dyes thiab tshuaj tua kab.
Txoj Kev Npaj:
- 3,5-Dibromo-2-fluoropyridine tuaj yeem npaj tau los ntawm cov tshuaj tiv thaiv pyridine iodide thiab cuprous bromide.
- Ua ntej dissolve cuprous bromide thiab pyridine iodide nyob rau hauv dimethyl sulfoxide nyob rau hauv chav tsev kub los tsim ib tug reactant, ces maj mam ntxiv nyiaj fluoride dropwise ntawm qhov kub thiab txias, thiab thaum kawg kub kom txog thaum cov tshuaj tiv thaiv tiav.
Cov ntaub ntawv kev nyab xeeb:
- 3,5-Dibromo-2-fluoropyridine ua rau khaus ntawm daim tawv nqaij thiab qhov muag, thiab kev tiv thaiv yuav tsum tau them sai sai rau thaum sib cuag.
- Ua tib zoo saib xyuas qhov cua zoo thaum siv cov khoom sib xyaw no.
-Nws decomposes ntawm qhov kub thiab txias yuav tsim teeb meem gases, thiab nws yog ib qho tsim nyog kom tsis txhob raug hluav taws kub los yog kub kub.
- Khaws cia rau hauv qhov chaw kaw thiab tsis txhob sib cuag nrog cov oxidants thiab cov kua qaub muaj zog kom tsis txhob muaj kev phom sij txaus ntshai.
