Igama Lomkhiqizo:I-Methyl Ethyl Ketone

Ifomethi ye-Molecular:C4H8O

Inombolo ye-CAS:78-93-3

Isakhiwo samangqamuzana omkhiqizo:

Ukucaciswa:

Chemical Properties:

I-methyl ethyl ketone iyakwazi ukusabela okuhlukahlukene ngenxa yeqembu layo le-carbonyl kanye ne-hydrogen esebenzayo eseduze neqembu le-carbonyl. Ukujiya kwenzeka uma kushiswa nge-hydrochloric acid noma i-sodium hydroxide ukukhiqiza i-3,4-dimethyl-3-hexen-2-one noma i-3-methyl-3-hepten-5-one. Lapho kuvezwa elangeni isikhathi eside, kukhiqizwa i-ethane, i-acetic acid kanye nemikhiqizo yokufingqa. Khiqiza i-diacetyl uma i-oxidized nge-nitric acid. Uma i-oxidized ngama-oxidizing agents aqinile njenge-chromic acid, i-acetic acid iyakhiqizwa. I-Butanone izinzile ekushiseni, futhi ukuqhekeka okushisayo emazingeni okushisa aphezulu kukhiqiza i-enone noma i-methyl enone. Uma kufingqiwe nge-aliphatic noma i-aldehyde enamakha, ama-ketones anesisindo samangqamuzana aphezulu, ama-cyclic compounds, i-ketone condensation nama-resin akhiqizwa. Isibonelo, ukufingqa nge-formaldehyde phambi kwe-sodium hydroxide kuqala kukhiqiza i-2-methyl-1-butanol-3-one, kulandelwa ukuphelelwa amanzi emanzini ku-methacrylatone.
Ukwenziwa kabusha kwe-resin kwenzeka lapho uchayeka elangeni noma ekukhanyeni kwe-UV. Ukujiya nge-phenol kukhiqiza i-2,2-bis(4-hydroxyphenyl)butane. Isabela ngama-aliphatic esters phambi kwe-catalyst eyisisekelo ukukhiqiza ama-β-diketones. I-acylation ene-anhydride ene-acidic phambi kwe-catalyst ene-acidic ukwakha ama-β-diketones. Ihlangana ne-hydrogen cyanide yakhe i-cyanohydrin. Ihlangana ne-ammonia yenze okuphuma kokuphuma kwe-ketopiperidine. I-athomu ye-α-hydrogen ye-butanone ishintshwa kalula ngama-halogen ukuze yakhe ama-ketone ane-halogenated ahlukahlukene, njenge-3-chloro-2-butanone ngokusebenzisana ne-chlorine. Ukusebenzisana ne-2,4-dinitrophenylhydrazine kukhiqiza i-2,4-dinitrophenylhydrazone ephuzi.

Isicelo:

I-Methyl ethyl ketone (i-2-butanone, i-ethyl methyl ketone, i-methyl acetone) i-solvent yemvelo enobuthi obuphansi ngokuqhathaniswa, etholakala ezinhlelweni eziningi. Isetshenziswa emikhiqizweni yezimboni neyezentengiselwano njengesithako sokunamathisela, upende, nama-ejenti okuhlanza nanjenge- de-waxing solvent. Ingxenye yemvelo yokunye ukudla, i-methyl ethyl ketone ingadedelwa endaweni ezungezile ngezintaba-mlilo nemililo yehlathi. Ibuye isetshenziswe njenge-flavoringsubstance ekudleni.

I-MEK isetshenziswa njenge-solvent yezinhlelo ezihlukahlukene zokuhlanganisa, isibonelo, i-vinyl, i-adhesives, i-nitrocellulose, ne-acrylic coatings. Isetshenziselwa ukususa upende, ama-lacquers, ama-varnish, amapende wesifutho, ama-sealers, ama-glues, amateyipu kazibuthe, oyinki bokuphrinta, ama-resin, ama-rosins, izixazululo zokuhlanza, kanye nokwenza i-polymerization. Itholakala kweminye imikhiqizo yabathengi, isibonelo, usimende wasendlini kanye nokuzilibazisa, nemikhiqizo yokugcwalisa izinkuni. I-MEK isetshenziswa ekukhipheni uwoyela wokugcoba, ukucoliswa kwezinsimbi, ekukhiqizeni izikhumba zokwenziwa, iphepha elisobala ne-aluminium foil, nanjengamakhemikhali aphakathi nendawo kanye ne-catalyst. Kuyi-solvent ekhishwa lapho kulungiswa ukudla nezithako zokudla. I-MEK ingasetshenziswa futhi ukuvala inzalo imishini yokuhlinza neyamazinyo.
Ngokungeziwe ekwenziweni kwayo, imithombo yemvelo ye-MEK ihlanganisa nokukhipha umoya ophuma ejethi nezinjini ezivuthayo zangaphakathi, kanye nemisebenzi yezimboni efana nokufakwa kwegesi kwamalahle. Itholakala ngamanani amakhulu entuthwini kagwayi. I-MEK ikhiqizwa ngokwebhayoloji futhi ikhonjwe njengomkhiqizo we-microbial metabolism. Iphinde yatholakala ezitshalweni, kuma-pheromone ezinambuzane, nezicubu zezilwane, futhi i-MEK cishe iwumkhiqizo omncane we-metabolism evamile yezilwane ezincelisayo. Iyazinzile ngaphansi kwezimo ezijwayelekile kodwa ingakha ama-peroxides ekugcinweni isikhathi eside; lezi zingase ziqhume.