I-Ethyl cyanoacetate(CAS#105-56-6)
| Iimpawu ezinobungozi | Xi – Irritant |
| Iikhowudi zoMngcipheko | I-R36/38 – Iyacaphukisa amehlo kunye nolusu. |
| Inkcazelo yoKhuseleko | S26 – Xa udibana namehlo, hlambulula ngokukhawuleza ngamanzi amaninzi kwaye ufune iingcebiso zonyango. I-S37/39 -Nxiba iiglavu ezifanelekileyo kunye nokukhusela amehlo / ubuso |
| Izazisi ze-UN | UN 2666 |
I-Ethyl cyanoacetate(CAS#105-56-6) Intshayelelo
I-Ethyl cyanoacetate, inombolo ye-CAS 105-56-6, yinto ebalulekileyo ye-organic organic material raw.
Ngokwesakhiwo, iqulethe iqela le-cyano (-CN) kunye neqela le-ethyl ester (-COOCH₂CH₃) kwi-molecule yayo, kwaye le nhlanganisela yezakhiwo yenza ukuba iikhemikhali zihluke. Ngokweempawu ezibonakalayo, ngokuqhelekileyo lulwelo olungenambala ukuya kukukhanya olutyheli olunevumba elikhethekileyo, indawo yokunyibilika emalunga -22.5 °C, indawo yokubila kuluhlu lwama-206 – 208 °C, lunyibilika kwizinyibilikisi zendalo ezifana neealkoholi. kunye neetha, kunye nokunyibilika okuthile emanzini kodwa kuncinci.
Ngokubhekiselele kwiipropati zeekhemikhali, i-polarity eqinile yeqela le-cyano kunye neempawu ze-esterification zeqela le-ethyl ester linquma ukuba liyakwazi ukusabela ezininzi. Ngokomzekelo, i-nucleophile ye-classical, kunye neqela le-cyano lingathatha inxaxheba kwi-reaction yokongeza kaMichael, kunye nokudibanisa ukudibanisa kunye ne-α, i-β-unsaturated carbonyl compounds ingasetyenziselwa ukwakha iibhondi ezintsha ze-carbon-carbon, ezibonelela ngendlela esebenzayo ukuhlanganiswa kweemolekyuli ezintsonkothileyo zezinto eziphilayo. Amaqela e-Ethyl ester anokuthi afakwe i-hydrolyzed phantsi kweemeko ze-acidic okanye i-alkaline ukwenza i-carboxylic acids ehambelanayo, eyona nto ibalulekileyo ekuguquleni amaqela asebenzayo kwi-organic synthesis.
Ngokwendlela yokulungiselela, i-ethyl chloroacetate kunye ne-sodium cyanide ziqhele ukusetyenziswa njengezinto ezisetyenziswayo ukulungiselela i-nucleophilic substitution reaction, kodwa le nkqubo kufuneka ilawule ngokungqongqo idosi kunye neemeko zokusabela kwe-sodium cyanide, ngenxa yobutyhefu bayo obuphezulu kunye nokusebenza okungalunganga. kulula ukubangela iingozi zokhuseleko, kwaye kuyafuneka ukuba ubeke ingqalelo kumanyathelo okuhlanjululwa okulandelwayo ukufumana iimveliso ezicocekileyo.
Kusetyenziso lwemizi-mveliso, lungundoqo ophakathi ekudityanisweni kweekhemikhali ezintle ezifana namayeza, amayeza okubulala izitshabalalisi, kunye neziqholo. Kwezamayeza, isetyenziselwa ukwenza amachiza okuthomalalisa-hypnotic afana nebarbiturates; Kwintsimi ye-pesticides, thatha inxaxheba kwi-synthesis ye-compounds kunye nemisebenzi ye-insecticidal kunye ne-herbicidal; Kwindlela yokudityaniswa kweziqholo, inokwakha amathambo eemolekyuli zencasa ekhethekileyo kwaye ibonelele ngemathiriyeli ekrwada ekhethekileyo yokudityaniswa kwencasa eyahlukeneyo, edlala indima ebalulekileyo ekuxhaseni ishishini lanamhlanje, ezolimo kunye namashishini eempahla zabathengi.
Kufuneka kugxininiswe ukuba ngenxa yeqela le-cyano, i-Ethyl cyanoacetate inetyhefu ethile kunye nefuthe elicaphukisayo eluswini, amehlo, umgudu wokuphefumla, njl., Ngoko ke kuyimfuneko ukunxiba izixhobo zokukhusela kwindawo enomoya kakuhle ngexesha lokusebenza, kwaye landela ngokungqongqo imimiselo yokhuseleko lweelebhu zamachiza kunye nokuveliswa kweekhemikhali.
