Dangerous Properties of Organic Peroxides

Cov molecular muaj pes tsawg leeg ntawm cov organic peroxides muaj peroxy (-OO -), uas yog flammable thiab tawg, yooj yim rau decompose, thiab heev rhiab heev rau tshav kub, kev co thiab kev sib txhuam.
Feem ntau cov organic peroxide ntau yam hauv kev ua haujlwm ntawm cov tshuaj phom sij yog: peracetic acid, methyl ethyl ketone peroxide (catalyst M, resin contact agent), benzoyl peroxide, thiab lwm yam.
Cov yam ntxwv txaus ntshai ntawm cov organic peroxides yog raws li hauv qab no.
1. oxidizability
Vim tias cov organic peroxides muaj peroxy (-OO -), lawv pom muaj zog oxidation zog, thiab feem ntau ntawm lawv tuaj yeem siv los ua oxidants. Vim tias cov organic peroxides kuj muaj cov qauv txo qis xws li carbon-hydrogen bonds, lawv muaj tag nrho cov khoom siv rau REDOX cov tshuaj tiv thaiv, yog li cov organic peroxides muaj kev phom sij ntau dua li lwm cov oxidants. Xws li: benzoyl peroxide, peracetic acid, methyl ethyl ketone peroxide, thiab lwm yam, yog nquag ua rau tawg autoxidation decomposition cov tshuaj tiv thaiv.
2. Decomposition tawg
Cov khoom decomposition ntawm cov organic peroxides yog cov dawb radicals, thiab cov tshuaj tiv thaiv uas muaj cov dawb radicals yog ib qho nyuaj rau inhibited los ntawm cov pa inhibition txoj kev. Vim hais tias ntau ntawm nws cov khoom decomposition yog gases los yog volatile tshuaj, ua ke nrog rau cov muaj oxygen, nws yog feem ntau explosive decomposition. Qhov ntau peroxy nyob rau hauv cov organic peroxides, qhov kub decomposition qis dua thiab muaj kev pheej hmoo ntau dua. Yog hais tias cov ntshiab diacetyl peroxide yog tsim thiab khaws cia rau 24 teev, muaj zog tawg yuav tshwm sim; Thaum cov dej ntsiab lus tsawg dua 1 feem pua ​​(qhov loj me), dibenzoyl peroxide tuaj yeem tawg nrog kev sib txhuam me ntsis; Diisopropyl peroxydicarbonate tsis ruaj khov ntawm 10 degree thiab tawg thaum nws nce mus txog 17.22 degree. Peracetic acid (peracetic acid) cov khoom ntshiab tsis ruaj tsis khov, nws yuav tawg ntawm qhov rho tawm 20 degree, 40 feem pua ​​​​ntawm cov tshuaj tseem tuaj yeem decompose oxygen thaum khaws cia, thiab nws yuav tawg thaum rhuab mus rau 110 degree. Nws tsis yog qhov nyuaj kom pom tias cov organic peroxide yog rhiab heev rau qhov kub thiab txias sab nraud, thiab nws cov kev phom sij thiab kev puas tsuaj ntau dua li lwm cov oxidants.
3. ignitability
Organic peroxides lawv tus kheej yog flammable thiab hlawv sai sai, hloov mus rau hauv cov tshuaj tiv thaiv tawg. Piv txwv li, lub flash point ntawm peracetic acid yog 40.56 degree, lub flash point ntawm performic acid yog 40 degree, lub flash point ntawm tert-butanol peroxide yog 26.67 degree, lub flash point ntawm di-tert-butanol peroxide yog 18.33 degree, thiab Lub flash point ntawm di-tert-butyl peroxide tsuas yog 12 degree.
4. rhiab heev rau kev sib tsoo lossis kev sib txhuam
Cov pab pawg peroxy (-OO -) hauv cov organic peroxides yog cov qauv tsis ruaj khov, uas yog qhov tsis tshua muaj siab rau cov cua sov, kev co, kev sib tsoo, kev cuam tshuam los yog kev sib txhuam, thiab tej zaum yuav decompose thiab tawg thaum raug lub zog sab nraud.
5. Kev phom sij txaus ntshai nrog lwm yam tshuaj
Organic peroxides yog rhiab heev rau impurities, thiab kev sib cuag nrog acids, hnyav hlau tebchaw, hlau oxides los yog amines yuav ua rau tsausmuag thermal decomposition, tej zaum yuav tsim teeb meem los yog flammable gases los yog vapors, ib co burning sai thiab hnyav, heev tawg.
6. kev puas tsuaj
Organic peroxides yooj yim ua mob rau lub qhov muag, xws li cyclohexanone peroxide, tert-butyl hydrogen peroxide, diacetyl peroxide, thiab lwm yam, txawm tias lawv tsuas yog luv luv ntawm lub qhov muag, lawv yuav ua rau lub qhov muag puas loj, thiab tiv tauj nrog. lub qhov muag yuav tsum zam. Organic oxides feem ntau corrosive rau ntawm daim tawv nqaij, thiab qee hom muaj tshuaj lom heev.