Qee qhov kev paub txog AIBN (CAS: 78-67-1)

1.Lub npe Askiv:2,2′-Azobis (2-methylpropionitrile)

2.Cov khoom siv tshuaj lom neeg:

Cov siv lead ua dawb los yog cov hmoov dawb. Insoluble hauv dej, soluble hauv cov organic solvents xws li methanol, ethanol, acetone, ether, Petroleum ether thiab aniline.

3. Lub Hom Phiaj:

Ua ib qho pib rau polymerization ntawm vinyl chloride, Vinyl acetate, acrylonitrile thiab lwm yam monomers, nrog rau ua tus neeg sawv cev ua npuas ncauj rau roj hmab thiab yas, qhov ntau npaum li cas yog 10% ~ 20%. Cov khoom no kuj tseem siv tau ua tus neeg sawv cev vulcanizing, tshuaj lom neeg ua liaj ua teb, thiab ib qho nruab nrab hauv kev tsim cov organic. Cov khoom no yog ib qho tshuaj lom heev. LD5017.2-25mg / kg hauv nas tuaj yeem ua rau muaj kev lom neeg loj vim yog kev tso tawm ntawm cov organic cyanide thaum lub sijhawm thermal decomposition.

4. Txoj kev tsim khoom:

Acetone, hydrazine hydrate thiab Sodium cyanide yog siv ua cov khoom siv raw: qhov kub ntawm cov tshuaj tiv thaiv Condensation saum toj no yog 55 ~ 60 ℃, lub sijhawm tiv thaiv yog 5 teev, thiab tom qab ntawd txias rau 25 ~ 30 ℃ rau 2 teev. Thaum qhov kub poob qis dua 10 ℃, chlorine raug qhia thiab qhov tshuaj tiv thaiv tshwm sim hauv qab 20 ℃ hauv Chemicalbook. Qhov piv ntawm cov khoom siv yog: HCN: acetone: hydrazine = 1L: 1.5036kg: 0.415kg. Acetone cyanohydrin reacts nrog hydrazine hydrate, thiab tom qab ntawd oxidizes nrog kua chlorine lossis aminobutyronitrile nrog Sodium hypochlorite.

5. Kub pib ntawm tus pib

AIBN yog ib qho Radical initiator zoo heev. Thaum cua sov txog li 70 ° C, nws yuav lwj thiab tso tawm nitrogen thiab tsim cov free radical (CH3) 2CCN. Cov free radical ruaj khov vim muaj kev cuam tshuam ntawm pawg cyano. Nws tuaj yeem ua rau muaj kev cuam tshuam nrog lwm cov organic substrate thiab rov tsim dua tshiab rau hauv cov free radical tshiab thaum rhuav tshem nws tus kheej, yog li ua rau muaj Chain reaction ntawm cov free radicals (saib Free Radical Reaction). Tib lub sijhawm, nws kuj tseem tuaj yeem txuas nrog ob lub molecule los ntawm Chemicalbook los tsim tetramethyl Succinonitrile (TMSN) nrog kev lom heev. Thaum cua sov AIBN txog 100-107 ° C, nws yaj thiab dhau los ua qhov lwj sai, tso cov pa nitrogen thiab ntau cov organic nitrile lom, uas kuj tseem yuav ua rau tawg thiab hluav taws. Maj mam lwj ntawm chav tsev kub thiab khaws cia hauv qab 10 ° C. Khaws kom deb ntawm cov hluav taws xob thiab cov cua sov. Lom. Metabolized rau hauv hydrocyanic acid hauv cov tsiaj cov ntaub so ntswg xws li ntshav, siab, thiab lub hlwb.

6. Cov yam ntxwv ntawm kev khaws cia thiab kev thauj mus los:

① Kev faib tawm ntawm kev lom: Kev lom

② Cov yam ntxwv txaus ntshai ntawm kev tawg: tuaj yeem tawg thaum sib xyaw nrog cov tshuaj oxidants; Yooj yim rau oxidize, tsis ruaj khov, lwj heev hauv qab cua sov, thiab tawg thaum cua sov nrog heptane thiab acetone

③ Cov yam ntxwv ntawm kev phom sij ntawm kev kub hnyiab: Kub hnyiab tau thaum muaj hluav taws qhib, kub heev, thiab cov neeg ua haujlwm oxidizing; Ua rau cov pa roj kub hnyiab thaum raug cua sov; Kev hlawv ua rau muaj pa luam yeeb nitrogen oxide lom.

④ Cov yam ntxwv ntawm kev khaws cia thiab kev thauj mus los: qhov cua hauv tsev rau khoom, qhov kub qis kom qhuav; Khaws cia cais ntawm cov tshuaj oxidants

⑤ Cov tshuaj tua hluav taws: dej, xuab zeb qhuav, carbon dioxide, ua npuas dej, 1211 tshuaj tua hluav taws