3-Bromo-5-fluoropyridine (CAS # 407-20-5)
| Risk Codes | R22 - Ua phem yog tias nqos R37/38 - Kab mob ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R10 - Flammable |
| 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. S39 - Hnav qhov muag / ntsej muag tiv thaiv. S36 - Hnav khaub ncaws tiv thaiv zoo. S16 - Khaws kom deb ntawm qhov chaw hluav taws xob. |
| UN IDs | UN 2811 |
| WGK Germany | 3 |
| HS Code | 293339 0 |
| Kev Ceeb Toom | Irritant |
| Hazard Class | 6.1 |
Taw qhia
5-Bromo-3-fluoropyridine yog ib qho organic compound. Cov hauv qab no yog kev qhia txog nws qhov xwm txheej, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb:
Zoo:
- 5-Bromo-3-fluoropyridine yog ib yam khoom nrog cov morphology ntawm cov dawb los yog daj muaju.
- Nws yog ib qho organohalogen compound nrog cov tshuaj lom neeg siab.
- 5-Bromo-3-fluoropyridine yog insoluble hauv dej ntawm chav tsev kub, tab sis soluble nyob rau hauv organic solvents xws li ethanol thiab ethers.
Siv:
- 5-Bromo-3-fluoropyridine feem ntau yog siv los ua ib qho tseem ceeb reagent hauv organic synthesis.
- Nws muaj zog electrophilic hloov pauv thiab ua kom muaj zog, thiab tuaj yeem siv rau kev hloov pauv, sib txuas thiab cyclization cov tshuaj tiv thaiv hauv cov tshuaj tiv thaiv organic synthesis.
Txoj kev:
- 5-Bromo-3-fluoropyridine tuaj yeem ua ke los ntawm ntau txoj hauv kev, txoj kev siv ntau tshaj plaws yog ua rau bromofluoropyridine nrog acetonitrile.
- 3-Bromopyridine kuj tuaj yeem tau txais los ntawm thawj zaug ua haujlwm nrog lithium subbromide los tsim 3-bromopyridine, thiab tom qab ntawd ua haujlwm nrog sodium fluoride kom tau 5-bromo-3-fluoropyridine.
Cov ntaub ntawv kev nyab xeeb:
- 5-Bromo-3-fluoropyridine yog cov organic compound uas txaus ntshai thiab yuav tsum muaj kev nyab xeeb hauv chav kuaj.
- Tej zaum nws yuav muaj kev cuam tshuam rau lub qhov muag thiab tawv nqaij thiab kev sib cuag ncaj qha yuav tsum raug zam.
- 5-Bromo-3-fluoropyridine yuav tsum muab cia rau hauv lub thawv airtight, kom deb ntawm hluav taws kub thiab kub.
- Thaum siv thiab tuav, ua raws li cov txheej txheem kev nyab xeeb muaj feem xyuam thiab yuav tsum muaj cov cuab yeej tiv thaiv tsim nyog xws li hnab looj tes thiab tsom iav.
