Chidziwitso china chokhudza AIBN (CAS:78-67-1)

1.Dzina la Chingerezi:2,2′-Azobis(2-methylpropionitrile)

2.Kapangidwe ka mankhwala:

Makristalo oyera kapena makristaro oyera ngati ufa. Osasungunuka m'madzi, amasungunuka mu zinthu zachilengedwe monga methanol, ethanol, acetone, ether, Petroleum ether ndi aniline.

3. Cholinga:

Monga choyambitsa polymerization ya vinyl chloride, Vinyl acetate, acrylonitrile ndi ma monomers ena, komanso ngati chopangira thovu la rabara ndi pulasitiki, mlingo wake ndi 10% ~ 20%. Chogulitsachi chingagwiritsidwenso ntchito ngati chothandizira kuwononga, mankhwala a zaulimi, komanso chothandizira kupanga zinthu zachilengedwe. Chogulitsachi ndi chakupha kwambiri. LD5017.2-25mg/kg m'makoswe amatha kuyambitsa poizoni wambiri kwa anthu chifukwa cha kutulutsidwa kwa cyanide yachilengedwe panthawi yowola kutentha.

4. Njira yopangira:

Acetone, hydrazine hydrate ndi Sodium cyanide zimagwiritsidwa ntchito ngati zopangira: kutentha kwa condensation reaction komwe kwatchulidwa pamwambapa ndi 55~60 ℃, nthawi yochitira ndi maola 5, kenako kuzizira kufika 25~30 ℃ kwa maola awiri. Kutentha kukatsika kufika pansi pa 10 ℃, chlorine imalowetsedwa ndipo zimachitika pansi pa 20 ℃ mu Chemicalbook. Chiŵerengero cha zinthu ndi: HCN: acetone: hydrazine=1L: 1.5036kg: 0.415kg. Acetone cyanohydrin imayanjana ndi hydrazine hydrate, kenako imasakanikirana ndi chlorine yamadzimadzi kapena aminobutyronitrile ndi Sodium hypochlorite.

5. Kutentha kwa kuyambitsa kwa woyambitsa

AIBN ndi chida chabwino kwambiri choyambitsa Radical. Ikatenthedwa kufika pa 70 ° C, imawola ndikutulutsa nayitrogeni ndikupanga free radical (CH3) 2CCN. Free radical imakhala yokhazikika chifukwa cha mphamvu ya gulu la cyano. Imatha kuchitapo kanthu ndi substrate ina yachilengedwe ndikusinthika kukhala free radical yatsopano pomwe imadziwononga yokha, motero kuyambitsa Chain reaction ya free radicals (onani Free Radical Reaction). Nthawi yomweyo, imathanso kuphatikizidwa ndi mamolekyu awiri ndi Chemicalbook kuti ipange tetramethyl Succinonitrile (TMSN) yokhala ndi poizoni wamphamvu. Ikatenthetsa AIBN kufika pa 100-107 ° C, imasungunuka ndikuwonongeka mwachangu, kutulutsa mpweya wa nayitrogeni ndi mankhwala angapo oopsa a organic nitrile, omwe angayambitsenso kuphulika ndi kuyaka. Pang'onopang'ono imawola kutentha kwa chipinda ndikusunga pansi pa 10 ° C. Sungani kutali ndi zoyaka ndi magwero a kutentha. Poizoni. Imasinthidwa kukhala hydrocyanic acid m'maselo a nyama monga magazi, chiwindi, ndi ubongo.

6. Makhalidwe osungira ndi mayendedwe:

① Gulu la poizoni: Poizoni

② Makhalidwe a kuphulika: amatha kuphulika akasakanikirana ndi ma oxidants; Osavuta kusungunuka, osakhazikika, amawola mwamphamvu akatenthedwa, ndipo amaphulika Chemicalbook ikatenthedwa ndi heptane ndi acetone

③ Zizindikiro za ngozi yoyaka: Yoyaka moto pamene pali malawi otseguka, kutentha kwambiri, ndi zinthu zopangitsa kuti zinthu ziwonongeke; Imawononga mpweya woyaka moto ikawotchedwa; Kuyaka kumatulutsa utsi woopsa wa nitrogen oxide

④ Makhalidwe osungira ndi mayendedwe: mpweya wokwanira m'nyumba yosungiramo zinthu, kuumitsa kutentha kochepa; Sungani padera ndi ma oxidants

⑤ Chozimitsira: madzi, mchenga wouma, carbon dioxide, thovu, chozimitsira cha 1211