Ulwazi oluthile malunga ne-AIBN (CAS:78-67-1)

1.Igama lesiNgesi:I-2,2′-Azobis(2-methylpropionitrile)

2.Iimpawu zekhemikhali:

Iikristale ezimhlophe zekholamu okanye iikristale ezimhlophe ezinjengomgubo. Azinyibiliki emanzini, zinyibilika kwizinyibilikisi zendalo ezifana ne-methanol, i-ethanol, i-acetone, i-ether, i-petroleum ether kunye ne-aniline.

3. Injongo:

Njengomqalisi we-polymerization ye-vinyl chloride, i-vinyl acetate, i-acrylonitrile kunye nezinye ii-monomers, kunye ne-arhente ye-foam yerabha kunye neplastiki, idosi yi-10% ~ 20%. Le mveliso ingasetyenziswa njenge-arhente ye-vulcanizing, amayeza e-agriculty chemicalbook, kunye ne-intermediate kwi-organic synthesis. Le mveliso yinto enobuthi kakhulu. I-Oral LD5017.2-25mg/kg kwiimpuku inokubangela ubuthi obukhulu ebantwini ngenxa yokukhululwa kwe-organic cyanide ngexesha lokubola kobushushu.

4. Indlela yokuvelisa:

I-Acetone, i-hydrazine hydrate kunye ne-Sodium cyanide zisetyenziswa njengezinto eziluhlaza: ubushushu bokusabela kwe-Condensation obungentla buyi-55~60 ℃, ixesha lokuphendula liyi-5h, uze uphole uye kwi-25~30 ℃ kangangeeyure ezi-2. Xa ubushushu buhla buye ngaphantsi kwe-10 ℃, kungeniswa i-chlorine kwaye impendulo yenzeka ngaphantsi kwe-20 ℃ kwi-Chemicalbook. Umlinganiselo wezinto ezisetyenzisiweyo ngu: HCN: i-acetone: i-hydrazine=1L: 1.5036kg: 0.415kg. I-Acetone cyanohydrin isabela kunye ne-hydrazine hydrate, ize i-oxidize kunye ne-chlorine engamanzi okanye i-aminobutyronitrile kunye ne-Sodium hypochlorite.

5. Ubushushu bokuqalisa bomqalisi

I-AIBN sisixhobo esiphambili sokuqalisa iRadical. Xa ifudunyezwa ukuya kuthi ga kwi-70°C, iya kubola ize ikhuphe initrogen kwaye ivelise i-free radical (CH3) 2CCN. I-free radical izinzile ngenxa yempembelelo yeqela le-cyano. Ingasabela kwenye i-organic substrate ize iphinde ibuyele kwi-free radical entsha ngelixa izitshabalalisa, ngaloo ndlela ibangele i-Chain reaction ye-free radicals (jonga i-Free Radical Reaction). Kwangaxeshanye, inokudityaniswa neemolekyuli ezimbini yiChemicalbook ukuvelisa i-tetramethyl Succinonitrile (TMSN) enetyhefu enamandla. Xa ifudunyezwa yi-AIBN ukuya kwi-100-107°C, iyanyibilika kwaye ibole ngokukhawuleza, ikhuphe igesi ye-nitrogen kunye neekhompawundi ezininzi ze-organic nitrile ezinetyhefu, ezinokubangela ukuqhuma kunye nokutsha. Ibola kancinci kubushushu begumbi kwaye igcinwe ngaphantsi kwe-10°C. Gcina kude neentlantsi kunye nemithombo yobushushu. Inetyhefu. Iguqulwa ibe yi-hydrocyanic acid kwizicubu zezilwanyana ezifana negazi, isibindi, kunye nengqondo.

6. Iimpawu zokugcina kunye nezothutho:

① Udidi lwetyhefu: Ityhefu

② Iimpawu zobungozi bokuqhuma: zinokuqhuma xa zidityaniswe nee-oxidants; Kulula ukuzixuba, azizinzanga, zibola ngamandla xa zishushu, kwaye ziqhuma. Chemicalbook xa ifudunyezwa nge-heptane kunye ne-acetone.

③ Iimpawu zobungozi bokutsha: Inokutsha xa kukho amalangatye avulekileyo, amaqondo obushushu aphezulu, kunye nee-oxidizing agents; Ibolisa iigesi ezivuthayo xa zibekwe kubushushu; Ukutsha kuvelisa umsi we-nitrogen oxide onetyhefu

④ Iimpawu zokugcina nezokuthutha: umoya ongenisa impahla kwindawo yokugcina impahla, ukomisa ngobushushu obuphantsi; Gcina ngokwahlukileyo kwi-oxidants

⑤ Isixhobo sokucima: amanzi, isanti eyomileyo, ikharbon diokside, igwebu, iarhente yokucima i-1211