(E) -Methyl 4-bromocrotonate (CAS# 6000-00-6)
Ngozi ndi Chitetezo
| Zizindikiro Zowopsa | Xi - Zosangalatsa |
| Zizindikiro Zowopsa | R37/38 - Zokwiyitsa dongosolo la kupuma ndi khungu. R41 - Kuopsa kwa kuwonongeka kwakukulu kwa maso R36/37/38 - Zokwiyitsa maso, kupuma komanso khungu. |
| Kufotokozera Zachitetezo | S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala. S39 - Valani chitetezo chamaso / kumaso. |
| WGK Germany | 3 |
| Mtengo wa RTECS | GQ3120000 |
| FLUKA BRAND F CODES | 8-9 |
| HS kodi | 29161900 |
Mawu Oyamba
Trans-4-bromo-2-butenoic acid methyl ester ndi madzi opanda mtundu okhala ndi fungo lapadera. Ndi kachulukidwe pafupifupi 1.49g/cm3, kuwira powira pafupifupi 171-172°C, ndi kung'anima kwa pafupifupi 67°C. Izo sizisungunuka m'madzi kutentha, koma zimasakanikirana ndi zosungunulira organic monga ethanol, ether, etc.
Gwiritsani ntchito:
Trans-4-bromo-2-butenoic acid methyl ester amagwiritsidwa ntchito makamaka ngati wapakatikati mu zochita za organic synthesis. Itha kugwiritsidwa ntchito popanga zinthu zina zopangira organic, mwachitsanzo popanga ma organics mu chemistry yamankhwala ndi mankhwala ophera tizilombo.
Njira Yokonzekera:
Trans-4-bromo-2-butenoic acid methyl ester nthawi zambiri imakonzedwa ndi bromination reaction ndi esterification reaction. Butene imakhudzidwa koyamba ndi bromine kuti ipereke 4-bromo-2-butene, yomwe imapangidwanso ndi methanol kuti ipereke trans-4-bromo-2-butenoic acid methyl ester.
Zambiri Zachitetezo:
Trans-4-bromo-2-butenoic acid methyl ester ndi mtundu wa zosungunulira organic ndi mankhwala yaiwisi, amene ali ndi zoopsa zina. Zimakwiyitsa komanso zimawononga, ndipo kukhudzana ndi khungu, maso kapena kupuma kungayambitse kupsa mtima ndi kuvulala. Kukhudzana mwachindunji kuyenera kupewedwa panthawi yogwiritsira ntchito, ndipo chitetezo choyenera cha kupuma ndi zovala zoteteza ziyenera kutengedwa. Kuphatikiza apo, chisamaliro chiyenera kutengedwa kuti musagwirizane ndi ma okosijeni ndi ma asidi amphamvu pakusungidwa kuti mupewe zoopsa. Ngati mukufuna kugwiritsa ntchito mankhwalawa, chonde gwirani ntchito pamalo otetezeka ndikutsata njira zoyenera zogwirira ntchito.
