2 3-DIBROMO-5-METHYLPYRIDINE (CAS # 29232-39-1)
| 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. R41 - Riam phom loj rau qhov muag 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. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. 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.) S39 - Hnav qhov muag / ntsej muag tiv thaiv. |
| UN IDs | UN 2811 6.1 / PGIII |
| WGK Germany | 3 |
| Hazard Class | IRRITANT |
Taw qhia
2,3-dibromo-5-methylpyridine (2,3-dibromo-5-methylpyridine) yog cov organic compound nrog cov tshuaj formula C6H5Br2N. 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:
2,3-dibromo-5-methylpyridine yog cov khoom daj nrog cov ntxhiab tsw. Nws muaj qhov melting point ntawm 63-65 degrees Celsius thiab kub kub ntawm 269-271 degrees Celsius. Nws yog insoluble hauv dej thiab soluble hauv cov kuab tshuaj organic.
Siv:
2,3-dibromo-5-methylpyridine yog ntau yam organic synthesis nruab nrab. Nws tuaj yeem siv los ua ke rau lwm cov organic tebchaw, xws li derivatives ntawm biologically active tshuaj, tshuaj thiab tshuaj tua kab. Nws kuj tseem tuaj yeem siv rau cov khoom sib txuas ntawm cov khoom siv hluav taws xob xws li organic teeb-emitting diodes (OLED) thiab cov roj teeb organic.
Txoj kev:
2,3-dibromo-5-methylpyrridine tuaj yeem tau txais los ntawm kev ua haujlwm 5-methylpyridine nrog bromine. 5-Methylpyridine ua ntej reacts nrog hydrogen bromide, thiab tom qab ntawd txuas ntxiv hnov mob nrog methyl chloride nyob rau hauv lub xub ntiag ntawm catalyst los tsim cov khoom lag luam.
Cov ntaub ntawv kev nyab xeeb:
2,3-dibromo-5-methylpyrridine yog khaus thiab yuav ua rau khaus rau lub qhov muag, tawv nqaij thiab ua pa. Thaum siv, cov txheej txheem kev ua haujlwm nyab xeeb yuav tsum tau ua nruj me ntsis, kev sib cuag ncaj qha rau ntawm daim tawv nqaij thiab qhov muag yuav tsum raug zam, thiab kev ua haujlwm yuav tsum tau ua kom ntseeg tau hauv qhov chaw zoo. Thaum tuav thiab khaws cia, yuav tsum tau saib xyuas kom tsis txhob muaj kev sib cuag nrog cov oxidants thiab cov khoom siv hluav taws xob los tiv thaiv kev pheej hmoo ntawm hluav taws thiab tawg. Yog tias nqus tau los yog raug rau cov tshuaj no, nrhiav kev kho mob tam sim ntawd thiab sab laj nrog kws kho mob.
