2 5-Dibromo-4-methylpyridine (CAS# 3430-26-0)
| Zizindikiro Zowopsa | R36/37/38 - Zokwiyitsa maso, kupuma komanso khungu. R20/21/22 - Zowopsa pokoka mpweya, kukhudzana ndi khungu komanso kumeza. R41 - Kuopsa kwa kuwonongeka kwakukulu kwa maso R37/38 - Zokwiyitsa dongosolo la kupuma ndi khungu. R22 - Zowopsa ngati zitamezedwa |
| Kufotokozera Zachitetezo | S36/37/39 - Valani zovala zodzitchinjiriza zoyenera, magolovesi ndi chitetezo chamaso / kumaso. S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala. S39 - Valani chitetezo chamaso / kumaso. |
| WGK Germany | 3 |
| HS kodi | 29333999 |
| Zowopsa | Zovulaza |
| Kalasi Yowopsa | ZOKWIYA |
Mawu Oyamba
2,5-Dibromo-4-methylpyridine ndi organic pawiri. Zotsatirazi ndizofotokozera mwatsatanetsatane za katundu, ntchito, njira zokonzekera ndi chidziwitso cha chitetezo cha gululi:
Ubwino:
2,5-Dibromo-4-methylpyridine ndi yolimba yokhala ndi mawonekedwe amtundu wachikasu mpaka wachikasu. Lili ndi kusungunuka kwamphamvu ndipo limasungunuka mu zosungunulira zambiri za organic. Ndi gulu losakhazikika lomwe limasweka mosavuta padzuwa.
Gwiritsani ntchito:
Pawiri Izi nthawi zambiri ntchito ngati zopangira ndi reagent mu organic synthesis.
Njira:
2,5-Dibromo-4-methylpyridine imakonzedwa makamaka ndi zomwe brominated p-toluene ndi pyridine. P-toluene imakumana ndi cuprous bromide kupanga 2-bromotoluene, yomwe kenako imakumana ndi pyridine pansi pa asidi catalysis kupanga chomaliza.
Zambiri Zachitetezo:
2,5-Dibromo-4-methylpyridine iyenera kusamalidwa mosamala chifukwa ndi mankhwala oopsa. Chisamaliro chiyenera kutengedwa kuti musakhudze khungu, maso, ndi kupuma thirakiti panthawi ya opaleshoni. Zida zodzitetezera zoyenera monga magolovesi, zovala zodzitchinjiriza, ndi zobvala zodzitetezera ziyenera kuvalidwa zikagwiritsidwa ntchito mu labotale. Ikasungidwa ndikugwiridwa, iyenera kusungidwa kutali ndi zinthu zoyaka moto ndi ma oxidizing agents. Ngati chinthucho chamezedwa kapena kupumitsidwa molakwika, chithandizo chamankhwala chiyenera kufunidwa mwamsanga. Potaya zinyalala, malamulo a m’deralo ayenera kutsatiridwa ndipo zinyalalazo ziyenera kutayidwa moyenera kuti zipewe kuipitsidwa kwa chilengedwe.
