Ethyl cyanoacetate(CAS#105-56-6)
| Zizindikiro Zowopsa | Xi - Zosangalatsa |
| Zizindikiro Zowopsa | R36/38 - Zokwiyitsa maso ndi khungu. |
| Kufotokozera Zachitetezo | S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala. S37/39 - Valani magolovesi oyenera komanso chitetezo chamaso / kumaso |
| Ma ID a UN | UN 2666 |
Ethyl cyanoacetate(CAS#105-56-6) Mau oyamba
Ethyl cyanoacetate, nambala ya CAS 105-56-6, ndi yofunika organic mankhwala zopangira.
Mwachidziwitso, ili ndi gulu la cyano (-CN) ndi gulu la ethyl ester (-COOCH₂CH₃) mu molekyulu yake, ndipo kuphatikiza kumeneku kumapangitsa kukhala kosiyanasiyana. Kutengera momwe thupi limakhalira, nthawi zambiri ndi madzi achikasu opepuka komanso onunkhira apadera, osungunuka pafupifupi -22.5 °C, malo otentha apakati pa 206 - 208 °C, osungunuka mu zosungunulira za organic monga ma alcohols. ndi ma etha, ndi kusungunuka kwina m'madzi koma pang'ono.
Pankhani ya mankhwala, polarity yamphamvu ya gulu la cyano ndi zizindikiro za esterification za gulu la ethyl ester zimatsimikizira kuti zikhoza kuchitika zambiri. Mwachitsanzo, ndi nucleophile yachikale, ndipo gulu la cyano likhoza kutenga nawo mbali pakuchitapo kanthu kwa Michael, ndipo kuphatikiza kophatikizana ndi α, β-unsaturated carbonyl compounds kungagwiritsidwe ntchito pomanga ma carbon-carbon bonds atsopano, omwe amapereka njira yothandiza kaphatikizidwe wa mamolekyu ovuta. Magulu a ethyl ester amatha kupangidwa ndi hydrolyzed pansi pa acidic kapena alkaline kuti apange ma carboxylic acid ofanana, omwe ndi ofunikira pakutembenuka kwamagulu ogwira ntchito mu kaphatikizidwe ka organic.
Pankhani ya njira yokonzekera, ethyl chloroacetate ndi sodium cyanide amagwiritsidwa ntchito ngati zopangira pokonzekera kudzera mu nucleophilic substitution reaction, koma njirayi iyenera kuwongolera mosamalitsa mlingo ndi zochitika za sodium cyanide, chifukwa cha kawopsedwe kake komanso ntchito yosayenera. ndizosavuta kuyambitsa ngozi zachitetezo, komanso ndikofunikira kulabadira njira zoyeretsera zotsatiridwa kuti mupeze zinthu zoyeretsedwa kwambiri.
M'mafakitale, ndizofunikira kwambiri pakuphatikiza mankhwala abwino monga mankhwala, mankhwala ophera tizilombo, ndi zonunkhira. Muzamankhwala, amagwiritsidwa ntchito popanga mankhwala osokoneza bongo monga ma barbiturates; M'munda wa mankhwala, nawo kaphatikizidwe wa mankhwala ndi insecticidal ndi herbicidal ntchito; Kaphatikizidwe ka zonunkhira, imatha kupanga mafupa a mamolekyu apadera onunkhira ndikupereka zida zapadera zophatikizira zokometsera zosiyanasiyana, zomwe zimagwira ntchito yofunika kwambiri pothandizira mafakitale amakono, zaulimi ndi zogulitsa zinthu.
Tiyenera kutsindika kuti chifukwa cha gulu la cyano, Ethyl cyanoacetate ili ndi kawopsedwe kakang'ono komanso koopsa pakhungu, maso, kupuma, etc. kutsatira mosamalitsa malamulo chitetezo ma laboratories mankhwala ndi kupanga mankhwala.
