Kutshanje, i-azobisisoheptonitrile iphinde yabonakala eluntwini. Le nto yekhemikhali, enegama lesiNgesi elithi 2,2′-Azobis-(2,4-dimethylvaleronitrile), ibonakala njengeekristale ezimhlophe, inendawo yokunyibilika ephakathi kwama-40 ukuya kuma-70℃. Sisiqalisi sokunyibilika kwioyile esinamandla okusebenza angama-122 KJ/mol. Inyibilika kwizinyibilikisi zendalo ezifana ne-methanol, i-toluene kunye ne-acetone, kodwa ayinyibiliki emanzini. Ubushushu bokubola kwisiqingatha sobomi seeyure ezili-10 yi-51℃ (kwi-toluene).
I-Azobisisoheptonitrile isetyenziswa kakhulu kwi-bulk polymerization, i-suspension polymerization kunye ne-solution polymerization, kwaye isetyenziswa kakhulu kwimveliso yemizi-mveliso kunye nophando lwesayensi. Ekubeni ukubola kwayo phantse kube yimpendulo yokuqala, yenza uhlobo olunye kuphela lwe-free radical ngaphandle kwee-side reactions, izinzile ngokwendalo kwaye ilungele ukugcinwa kunye nokuthuthwa. Nangona kunjalo, kufuneka kuqatshelwe ukuba ngexesha lokuthuthwa, kufuneka ifakwe efrijini kwaye ikhuselwe kwiingxabano ezinkulu kunye nokungqubana, kungenjalo inokubangela ukuqhuma.
Sikhumbula kusasa nge-22 kaJulayi 2011, ibhasi yokulala enemigangatho emibini eyayisuka eWeihai, eShandong isiya eChangsha, eHunan kwiBeijing-Zhuhai Expressway ngequbuliso yavutha umlilo. Umlilo wawushushu kangangokuba watshisa ibhasi yaba yiqokobhe elingenanto. Le ntlekele yabulala abantu abangama-41 yaza yenzakalisa abantu aba-6, nomntu omnye wenzakala kakhulu. Emva kophando, unobangela wengozi yayikukuhamba ngokungekho mthethweni kunye nokuthuthwa kwemveliso yekhemikhali evuthayo i-azobisisoheptonitrile kwisithuthi sengozi. Ezi khemikhali ziyingozi zaqhuma ngequbuliso zatsha ngenxa yezinto ezinje ngokuphuma, ukungqubana kunye nokukhululwa kobushushu kwinjini, okwakhokelela kwesi siganeko sibuhlungu. Emva koko, abantu abafanelekileyo abanoxanduva babanjwa kwaye bavalelwa ngolwaphulo-mthetho ngokuhambelana nomthetho. NgoDisemba 2013, iNkundla yabantu abaPhakathi yeSixeko saseXinyang, kwiPhondo laseHenan yenza isigwebo sokuqala kweli tyala lengozi, igweba abantu abafanelekileyo abanoxanduva kwizohlwayo ezifanelekileyo ngenxa yolwaphulo-mthetho lokubeka ukhuseleko loluntu emngciphekweni ngeendlela eziyingozi kunye neengozi ezinkulu zoxanduva.
Esi siganeko sivakalise isilumkiso malunga nokhuseleko lokuthuthwa nokusetyenziswa kwe-azobisisoheptonitrile. Amashishini kunye nabasebenzi abafanelekileyo kufuneka balandele ngokungqongqo imithetho efanelekileyo xa besebenzisa i-azobisisoheptonitrile, baqinisekise ukuba iimeko zokuthuthwa kunye nokugcinwa kwazo ziyahlangabezana neemfuno, kwaye baphephe ukuphinda kwenzeke iintlekele ezifanayo. Kwangaxeshanye, uluntu kufuneka luphucule ukuqonda kwabo ngeekhemikhali eziyingozi kwaye luphakamise ulwazi lwabo ngokhuseleko.
Ixesha leposi: Februwari-14-2025
