2 4-Dibromopyridine (CAS # 58530-53-3)
| 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. R22 - Ua phem yog tias 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. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. S36 - Hnav khaub ncaws tiv thaiv zoo. S37 - Hnav cov hnab looj tes tsim nyog. S22 - Tsis txhob nqus plua plav. |
| UN IDs | 2811 ib |
| WGK Germany | 1 |
| Hazard Class | IRRITANT |
| Packing Group | Ⅲ |
Taw qhia
2,4-Dibromopyridine 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:
- Cov tsos mob: 2,4-dibromopyridine yog cov xim tsis muaj xim lossis lub teeb daj crystalline khoom.
- Solubility: 2,4-dibromopyridine yog soluble nyob rau hauv feem ntau cov organic solvents xws li ethanol, dimethyl sulfoxide thiab chloroform.
Siv:
- Dyes: Nws yog ib qho uas feem ntau siv cov xim nruab nrab uas tuaj yeem siv los ua ke cov xim sib txawv.
Txoj kev:
2,4-Dibromopyridine tuaj yeem npaj los ntawm cov hauv qab no:
- Catalyst bromination: Nyob rau hauv alkaline tej yam kev mob, 2,4-dibromopyridine tuaj yeem tau los ntawm reacting pyridine nrog brominating agent.
- Carbon-deuterium chiral halogenation cov tshuaj tiv thaiv: 2,4-dibromopyridine yog tau los ntawm reacting lub substrate nrog bromine.
Cov ntaub ntawv kev nyab xeeb:
Kev nyab xeeb thiab kev siv 2,4-dibromopyridine yuav tsum tau ua raws li cov hauv qab no:
- Cov tshuaj no yog tshuaj lom thiab yuav tsum tau saib xyuas.
- Cov cuab yeej tiv thaiv tus kheej tsim nyog xws li hnab looj tes, tsom iav, thiab khaub ncaws tiv thaiv yuav tsum hnav thaum tuav thiab siv.
- Tsis txhob nqus nws cov plua plav lossis nkag mus rau ntawm daim tawv nqaij thiab qhov muag.
- Nws yuav tsum tau ua haujlwm nyob rau hauv qhov chaw uas muaj cua zoo thiab tsis txhob sib cuag nrog lub qhov hluav taws kub kom tsis txhob muaj hluav taws kub los yog tawg.
- Cov txheej txheem ua haujlwm kom zoo yuav tsum tau ua raws thaum tuav thiab khaws cia.
