2-Bromo-4-methyl-5-nitropyridine (CAS # 23056-47-5)
| 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. |
| 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. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag |
| Hazard Class | IRRITANT |
Taw qhia
2-Bromo-4-methyl-5-nitropyridine 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:
2-Bromo-4-methyl-5-nitropyridine yog ib yam khoom uas muaj cov muaju daj. Nyob rau hauv chav tsev kub, nws tsis tshua muaj soluble hauv dej, tab sis nws tuaj yeem soluble hauv cov kuab tshuaj organic xws li ethanol thiab dimethylformamide.
Siv:
Cov tshuaj no feem ntau yog siv los ua ib qho nruab nrab hauv cov organic synthesis. Nws tuaj yeem siv rau hauv kev npaj ntawm lwm cov nitrogen-muaj heterocyclic compounds, xws li pyrroles thiab indoles.
Txoj kev:
2-Bromo-4-methyl-5-nitropyridine tuaj yeem npaj los ntawm kev hloov pauv cov tshuaj tiv thaiv ntawm aniline. Nyob rau hauv cov xwm txheej tsim nyog, aniline yog reacted nrog bromoacetic acid los tsim 2-bromoaniline. Tom qab ntawd, los ntawm alkylation nyob rau hauv alkaline tej yam kev mob, 2-bromoaniline yog alkylated kom tau 2-bromo-4-methylaniline. Qhov tshwm sim 2-bromo-4-methylaniline yog nitrified los ntawm nitrification kom tau 2-bromo-4-methyl-5-nitropyridine.
Cov ntaub ntawv kev nyab xeeb:
2-Bromo-4-methyl-5-nitropyridine yog ib qho organic compound thiab yuav tsum khaws cia thiab siv kom raug. Nws yog ib yam khoom uas combustible thiab yuav tsum tau khaws cia kom deb ntawm qhov qhib nplaim taws thiab kub kub. Thaum lub sijhawm ua haujlwm, kev sib cuag nrog daim tawv nqaij, qhov muag, thiab kev ua pa yuav tsum raug zam, thiab kev ua haujlwm yuav tsum tau ua nyob rau hauv qhov cua. Cov hnab looj tes tiv thaiv, tsom iav thiab qhov ncauj qhov ntswg yuav tsum tau hnav thaum siv. Nyob rau hauv rooj plaub ntawm kev sib chwv, yaug tam sim ntawd nrog dej ntau thiab nrhiav kev kho mob.
