Igama lemveliso:Methyl Ethyl Ketone

Imo yemolekyuli:C4H8O

Inombolo yeCAS:78-93-3

Imveliso yesakhiwo semolekyuli:

Inkcazo:

Iipropati zeMichiza:

I-Methyl ethyl ketone ichaphazeleka kwiimpendulo ezahlukeneyo ngenxa yeqela layo le-carbonyl kunye ne-hydrogen esebenzayo esecaleni kweqela le-carbonyl. I-Condensation iyenzeka xa ishushu nge-hydrochloric acid okanye i-sodium hydroxide ukuvelisa i-3,4-dimethyl-3-hexen-2-enye okanye i-3-methyl-3-hepten-5-enye. Xa ubekwe elangeni ixesha elide, kuveliswa i-ethane, i-acetic acid kunye neemveliso ze-condensation. Yenza i-diacetyl xa i-oxidized nge-nitric acid. Xa i-oxidized kunye nee-oxidizing agents ezinamandla ezifana ne-chromic acid, i-acetic acid yenziwa. I-Butanone izinzile xa ithelekiswa nobushushu, kwaye i-thermal cleavage kumaqondo obushushu aphezulu ivelisa i-enone okanye i-methyl enone. Xa i-aldehydes i-aliphatic okanye i-aromatics, ii-ketones eziphezulu ze-molecular weight, i-cyclic compounds, i-ketone condensation kunye ne-resins ziveliswa. Ngokomzekelo, i-condensation kunye ne-formaldehyde phambi kwe-sodium hydroxide kuqala ivelisa i-2-methyl-1-butanol-3-enye, ilandelwa ukuchithwa kwamanzi kwi-methacrylatone.
Ukwenziwa ngokutsha kwe-resinization kwenzeka xa ubesesichengeni selanga okanye kwisibane se-UV. Ukuxinwa kunye ne-phenol ivelisa i-2,2-bis (4-hydroxyphenyl) butane. Iphendula nge-aliphatic esters kubukho be-catalyst esisiseko ukuvelisa ii-β-diketones. I-acylation ene-anhydride eneasidi kubukho be-acidic catalyst ukwenza i-β-diketones. Idibana nehydrogen cyanide yenze icyanohydrin. Idibana ne-ammonia yenze izinto eziphuma kwi-ketopiperidine. I-athomu ye-α-hydrogen ye-butanone ifakwe ngokulula kunye ne-halogens ukwenza ii-ketones ezahlukeneyo ze-halogenated, ezifana ne-3-chloro-2-butanone ngokusebenzisana ne-chlorine. Ukusebenzisana kunye ne-2,4-dinitrophenylhydrazine ivelisa i-yellow 2,4-dinitrophenylhydrazone.

Isicelo:

I-Methyl ethyl ketone (i-2-butanone, i-ethyl methyl ketone, i-methyl acetone) i-solvent ye-organic ye-toxicity ephantsi, efumaneka kwizicelo ezininzi. Isetyenziswa kwiimveliso zoshishino kunye nezorhwebo njenge-solvent ye-adhesives, iipeyinti, kunye nee-agent zokucoca kunye ne-solvent de-waxing. Ilungu lendalo lokutya okuthile, i-methyl ethyl ketone inokukhutshwa kwindawo engqongileyo ngeentaba-mlilo kunye nomlilo wehlathi. Isetyenziselwa ukwenziwa komgubo ongenomsi kunye ne-synthetic resins engenambala, njenge-solvent, kunye ne-insurface coating. Ikwasetyenziswa njengencasa yencasa ekutyeni.

I-MEK isetyenziselwa ukunyibilikisa kwiinkqubo ezahlukeneyo zokugquma, umzekelo, i-vinyl, i-adhesives, i-nitrocellulose, kunye neengubo ze-acrylic. Isetyenziselwa ukususa ipeyinti, i-lacquers, ivanishi, iipeyinti zokutshiza, izitywini, iglue, iiteyiphu zemagneti, ii-inki zokuprinta, iireyini, iirosin, izisombululo zokucoca, kunye nepolymerization. Ifumaneka kwezinye iimveliso zabathengi, umzekelo, iisamente zendlu kunye nezinto zokuzilibazisa, kunye neemveliso zokuzalisa iinkuni. I-MEK isetyenziselwa ukuthambisa ioyile yokuthambisa, ukuthotywa kwesinyithi, kwimveliso yesikhumba sokwenziwa, iphepha elicacileyo kunye nefoyile ye-aluminium, kwaye njengekhemikhali ephakathi kunye ne-catalyst. Sisinyibilikisi esikhuphayo ekusetyenzweni kokutya kunye nezithako zokutya. I-MEK inokusetyenziselwa ukuvala inzala kwizixhobo zotyando kunye nezixhobo zamazinyo.
Ukongeza ekwenziweni kwayo, imithombo yokusingqongileyo ye-MEK ibandakanya ukukhupha ijethi kunye neenjini zokutsha zangaphakathi, kunye nemisebenzi yefektri efana nokufakwa kwegesi yamalahle. Ifumaneka kwisixa esikhulu kumsi wecuba. I-MEK iveliswa ngokwebhayoloji kwaye ichongiwe njengemveliso ye-microbial metabolism. Kwakhona kufunyenwe kwizityalo, i-pheromones yezinambuzane, kunye nezicubu zezilwanyana, kwaye i-MEK mhlawumbi imveliso encinci ye-metabolism ye-mammalian eqhelekileyo. Izinzile phantsi kweemeko eziqhelekileyo kodwa inokwenza iiperoxides ekugcinweni ixesha elide; ezi zinokugqabhuka.