2 5-dibromo-6-methylpyridine (CAS# 39919-65-8)
Ngozi ndi Chitetezo
| Zizindikiro Zowopsa | R20/21/22 - Zowopsa pokoka mpweya, kukhudzana ndi khungu komanso kumeza. R36/37/38 - Zokwiyitsa maso, kupuma komanso khungu. R41 - Kuopsa kwa kuwonongeka kwakukulu kwa maso R22 - Zowopsa ngati zitamezedwa |
| Kufotokozera Zachitetezo | S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala. S36/37/39 - Valani zovala zodzitchinjiriza zoyenera, magolovesi ndi chitetezo chamaso / kumaso. |
| Ma ID a UN | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| HS kodi | 29333990 |
| Zowopsa | Zovulaza |
| Kalasi Yowopsa | ZOKWIYA |
| Packing Group | III |
2 5-dibromo-6-methylpyridine (CAS#39919-65-8) Chiyambi
2,5-Dibromo-6-methylpyridine ndi organic pawiri. Zotsatirazi ndizofotokozera za katundu wake, ntchito, njira zokonzekera ndi chitetezo:
Katundu:
Mawonekedwe: 2,5-Dibromo-6-methylpyridine ndi olimba opanda mtundu kapena kuwala chikasu.
Kusungunuka: Amasungunuka mu zosungunulira zina monga ethanol, etha ndi ester solvents.
Ntchito: Itha kugwiritsidwa ntchito mu organic synthesis kuyambitsa magulu a methyl kapena ngati bromination reagent.
Njira yokonzekera:
Njira yokonzekera ya 2,5-Dibromo-6-methylpyridine ikhoza kuchitidwa ndi izi:
Sungunulani 2,6-dimethylpyridine mu mowa, ketone kapena ester solvent.
Onjezani bromine kapena bromination reagent ku yankho.
Zomwe zimachitika pa kutentha koyenera, ndipo nthawi yochitira nthawi zambiri imakhala yayitali.
Pambuyo kupeza mankhwala, akhoza yotengedwa ndi kuyeretsedwa ndi distillation kapena crystallization kuyeretsa njira.
Zambiri zachitetezo:
2,5-Dibromo-6-methylpyridine ndi poizoni pamlingo wina ndipo imakwiyitsa khungu ndi maso. Kulumikizana mwachindunji kuyenera kupewedwa. Pogwira ntchito, zida zoyenera zodzitetezera ziyenera kuvala, monga magolovesi ndi magalasi. Ntchitoyi iyenera kuchitika pamalo olowera mpweya wabwino kuti asapume mpweya woipa. Potaya zinyalala, ziyenera kuchitidwa motsatira malamulo a m’deralo. Mukamagwiritsa ntchito kapena kusunga 2,5-dibromo-6-methylpyridine, chisamaliro chiyenera kutengedwa kuti mupewe moto ndi kutentha kwambiri.
