(E)-Methyl 4-bromocrotonate（CAS# 6000-00-6)
Pilikia a palekana
| Nā hōʻailona pōʻino | Xi – Hoʻohaunaele |
| Nā Code Risk | R37/38 – Hoʻonanea i ka ʻōnaehana hanu a me ka ʻili. R41 – Ka pilikia o ka poino nui i na maka R36/37/38 – Hoʻonanea i ka maka, ka ʻōpū hanu a me ka ʻili. |
| Ka wehewehe palekana | S26 – Inā pili me nā maka, e holoi koke me ka wai nui a e ʻimi i ka ʻōlelo aʻo kino. S39 - Hoʻohana i ka pale maka / maka. |
| WGK Kelemānia | 3 |
| RTECS | GQ3120000 |
| NUI FLUKA BRAND F | 8-9 |
| HS Code | 29161900 |
Hoʻolauna
ʻO Trans-4-bromo-2-butenoic acid methyl ester he wai kala ʻole me kahi ʻala kūikawā. He 1.49g/cm3 kona mānoanoa, he 171-172°C, a he 67°C ke kiko uila. ʻAʻole hiki ke hoʻoheheʻe ʻia i loko o ka wai i ka mahana o ka lumi, akā hiki ke hoʻopili ʻia me nā solvents organik e like me ka ethanol, ether, etc.
E hoʻohana:
Hoʻohana nui ʻia ʻo Trans-4-bromo-2-butenoic acid methyl ester ma ke ʻano he mea waena i nā hopena synthesis organik. Hiki ke hoʻohana ʻia no ka hana ʻana i nā mea hoʻohui ʻē aʻe, no ka laʻana no ka synthesis o nā pūhui i loko o ka lāʻau lapaʻau a me ka pesticide chemistry.
Kaʻina hoʻomākaukau:
ʻO Trans-4-bromo-2-butenoic acid methyl ester ka mea maʻamau i hoʻomākaukau ʻia e ka hopena bromination a me ka hopena esterification. Hoʻopili mua ʻia ka Butene me ka bromine e hāʻawi i ka 4-bromo-2-butene, a laila esterified me ka methanol e hāʻawi i ka trans-4-bromo-2-butenoic acid methyl ester.
ʻIke palekana:
ʻO Trans-4-bromo-2-butenoic acid methyl ester kahi ʻano mea hoʻoheheʻe kūlohelohe a me nā mea kemika, aia kekahi pilikia. He mea hoʻonāukiuki a ʻino, a hiki i ka pili ʻana me ka ʻili, nā maka a i ʻole ka ʻōpū hanu hiki ke hōʻeha a hōʻeha. Pono e ʻalo ʻia ka hoʻopili pololei ʻana i ka wā e hoʻohana ai, a pono e lawe i ka pale hanu kūpono a me nā lole pale. Eia kekahi, pono e mālama ʻia e pale aku i ka hoʻopili ʻana me nā oxidants a me nā ʻakika ikaika i ka wā o ka mālama ʻana i mea e pale ai i nā hopena pōʻino. Inā pono ʻoe e hoʻohana i kēia pūhui, e ʻoluʻolu e hana ma kahi keʻena palekana a hahai i nā kaʻina hana palekana kūpono.
