2-Bromo-5-nitropyridine (CAS # 4487-59-6)
| Risk Codes | R25 - Toxic yog nqos R41 - Riam phom loj rau qhov muag |
| 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. 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.) |
| UN IDs | UN 2811 6.1 / PGIII |
| WGK Germany | 3 |
Taw qhia
2-Bromo-5-nitropyridine yog cov organic compound nrog cov tshuaj formula C5H3BrN2O2. Cov hauv qab no yog cov lus piav qhia ntawm nws qhov xwm txheej, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
2-Bromo-5-nitropyridine yog cov khoom dawb nrog me ntsis oxalic acid saj. Nws muaj cov thermal thiab tshuaj stability siab. Me ntsis soluble nyob rau hauv dej ntawm chav tsev kub, soluble nyob rau hauv organic solvents xws li ethanol thiab acetone.
Siv:
2-Bromo-5-nitropyridine muaj ntau yam kev siv. Nws yog ib qho tseem ceeb raw khoom thiab nruab nrab hauv cov organic synthesis. Nws tuaj yeem siv rau hauv kev sib txuas ntawm cov tshuaj tua kab, dyes, cov ntaub ntawv photosensitive thiab cov tshuaj sib txuas. Tsis tas li ntawd, nws tseem tuaj yeem siv los ua cov catalyst thiab ligand.
Txoj Kev Npaj:
2-Bromo-5-nitropyridine synthesis txoj kev yog cov hauv qab no:
1. los ntawm 2-bromopyridine thiab nitric acid cov tshuaj tiv thaiv nyob rau hauv acidic tej yam kev mob.
2. los ntawm 3-bromopyridine thiab sodium nitrite cov tshuaj tiv thaiv nyob rau hauv alkaline tej yam kev mob.
Cov ntaub ntawv kev nyab xeeb:
2-Bromo-5-nitropyridine yog cov tshuaj lom neeg nrog qee yam kev phom sij. Ua tib zoo saib xyuas cov kev tiv thaiv kev nyab xeeb hauv qab no thaum siv thiab khaws cia:
1. tsis txhob nqus cov plua plav lossis vapor, yuav tsum nyob hauv qhov chaw muaj cua zoo kom ua haujlwm.
2. Tsis txhob sib cuag nrog daim tawv nqaij, qhov muag thiab cov mucous daim nyias nyias, xws li kev sib cuag yuav tsum tam sim ntawd yaug nrog dej kom ntau, thiab nrhiav kev pab kho mob.
3. xyuam xim rau kev tiv thaiv hluav taws thiab tawg, tsis txhob sib cuag nrog cov khoom siv hluav taws xob.
4. Khaws rau hauv lub thawv kaw, kom deb ntawm hluav taws thiab oxidant.
5. Muab pov tseg raws li cov cai hauv zos kom tsis txhob tso tawm ncaj qha rau ib puag ncig.
Cov ntsiab lus:
2-Bromo-5-nitropyridine yog ib qho organic compound nrog ntau yam kev siv. Txawm li cas los xij, vim nws muaj toxicity, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas kev nyab xeeb, kev cia thiab pov tseg cov khoom seem.
