Lebitso la Sehlahiswa:Methyl Ethyl Ketone

Sebopeho sa molek'hule:C4H8O

Nomoro ea CAS:78-93-3

Sehlahisoa sebopeho sa molek'hule:

Tlhaloso:

Lintho tsa Lik'hemik'hale:

Methyl ethyl ketone e ts'oaroa habonolo ke maikutlo a fapaneng ka lebaka la sehlopha sa eona sa carbonyl le hydrogen e sebetsang e haufi le sehlopha sa carbonyl. Condensation e etsahala ha e futhumatsoa ka hydrochloric acid kapa sodium hydroxide ho hlahisa 3,4-dimethyl-3-hexen-2-one kapa 3-methyl-3-hepten-5-one. Ha nako e telele e pepesehetse khanya ea letsatsi, ethane, acetic acid le lihlahisoa tsa condensation lia hlahisoa. Hlahisa diacetyl ha oxidized ka nitric acid. Ha oxidized ka li-oxidizing agents tse matla tse kang chromic acid, acetic acid e hlahisoa. Butanone e batla e tsitsitse ha e futhumala, 'me ho phunyeha ha mocheso ho mocheso o phahameng ho hlahisa enone kapa methyl enone. Ha e koaheloa ka aldehyde ea aliphatic kapa e nkhang hamonate, ho hlahisoa li-ketone tse boima ba molek'hule, metsoako ea cyclic, condensation ea ketone le li-resin. Ka mohlala, condensation le formaldehyde boteng ba sodium hydroxide pele e hlahisa 2-methyl-1-butanol-3-one, e lateloa ke ho felloa ke metsi ho methacrylatone.
Resinization e etsahala ha o hlasetsoe ke khanya ea letsatsi kapa khanya ea UV. Condensation ka phenol e fana ka 2,2-bis(4-hydroxyphenyl)butane. E sebetsa ka li-aliphatic ester ka boteng ba ntho e thusang ho hlahisa β-diketones. Acylation e nang le acidic anhydride ka boteng ba acidic catalyst ho theha β-diketones. Ha e kopana le hydrogen cyanide ho etsa cyanohydrin. E sebetsana le ammonia ho etsa tse nkiloeng ho ketopiperidine. Athomo ea α-hydrogen ea butanone e nkeloa sebaka habonolo ke li-halogen ho etsa li-ketone tse sa tšoaneng tsa halogenated, tse kang 3-chloro-2-butanone ka ho sebelisana le chlorine. Ho sebelisana le 2,4-dinitrophenylhydrazine ho hlahisa 2,4-dinitrophenylhydrazone e mosehla.

Kopo:

Methyl ethyl ketone (2-butanone, ethyl methyl ketone, methyl acetone) ke motsoako oa tlhaho oa chefo e batlang e le tlase, e fumanoang lits'ebetsong tse ngata. E sebelisoa lihlahisoa tsa indasteri le tsa khoebo e le sehlapi sa sekhomaretsi, lipente, le lisebelisoa tsa ho hloekisa hape e le sehlapi sa de-waxing. Karolo ea tlhaho ea lijo tse ling, methyl ethyl ketone e ka lokolloa tikolohong ke libaka tse foqohang seretse se chesang le mello ea meru. E boetse e sebelisoa e le monko o monate lijong.

MEK e sebelisoa e le solvent bakeng sa lisebelisoa tse fapaneng tsa ho roala, mohlala, vinyl, li-adhesives, nitrocellulose, le liphahlo tsa acrylic. E sebelisoa ho tlosa pente, li-lacquers, li-varnish, lipente tsa spray, sealers, glues, litheipi tsa makenete, li-inks tsa khatiso, li-resin, rosin, litharollo tsa ho hloekisa le ho etsa polymerization. E fumanoa lihlahisoa tse ling tsa bareki, mohlala, samente tsa malapa le tsa ho itlosa bolutu, le lihlahisoa tsa ho tlatsa lehong. MEK e sebelisoa ho tlotsa oli e tlotsang, ho theola litšepe, tlhahiso ea matlalo a maiketsetso, pampiri e pepeneneng le foil ea aluminium, hape e le lik'hemik'hale tse mahareng le tse thusang. Ke sehlapolli sa ho ntša lijo ha ho etsoa lijo le metsoako ea lijo. MEK e ka boela ea sebelisoa ho thibela lisebelisoa tsa ho buoa le tsa meno.
Ntle le tlhahiso ea eona, mehloli ea tikoloho ea MEK e kenyelletsa mosi o tsoang ho jete le lienjineri tse tukang ka hare, le mesebetsi ea indasteri e kang khase ea mashala. E fumanoa ka bongata mosi oa koae. MEK e hlahisoa ka biologically mme e khethiloe e le sehlahisoa sa metabolism ea likokoana-hloko. E boetse e fumanoe limela, li-pheromone tsa likokoanyana, le lisele tsa liphoofolo, 'me MEK mohlomong ke sehlahisoa se senyenyane sa metabolism e tloaelehileng ea mammalian. E tsitsitse tlas'a maemo a tloaelehileng empa e ka etsa peroxides polokelong ea nako e telele; tsena li ka 'na tsa phatloha.