Sunan samfur:Methyl Ethyl Ketone

Tsarin kwayoyin halitta:C4H8O

CAS No:78-93-3

Tsarin kwayoyin halitta:

Bayani:

Abubuwan Sinadarai:

Methyl ethyl ketone yana da saukin kamuwa da halayen daban-daban saboda rukunin carbonyl da kuma hydrogen mai aiki kusa da ƙungiyar carbonyl. Kwangila yana faruwa lokacin da aka yi zafi da hydrochloric acid ko sodium hydroxide don samar da 3,4-dimethyl-3-hexen-2-one ko 3-methyl-3-hepten-5-one. Lokacin da aka fallasa zuwa hasken rana na dogon lokaci, ana samar da ethane, acetic acid da samfuran narkar da ruwa. Samar da diacetyl lokacin da oxidized tare da nitric acid. Lokacin da oxidized tare da karfi oxidizing jamiái irin su chromic acid, acetic acid ne ya haifar. Butanone yana da ɗan kwanciyar hankali don zafi, kuma tsagewar zafi a yanayin zafi mafi girma yana haifar da enone ko methyl enone. Lokacin da aka haɗa shi da aliphatic ko aromatic aldehydes, ana samar da ketones masu nauyi masu nauyi, mahaɗan cyclic, ketone condensation da resins. Alal misali, condensation tare da formaldehyde a gaban sodium hydroxide da farko samar da 2-methyl-1-butanol-3-one, bi da dehydration zuwa methacrylatone.
Resinization yana faruwa ne a lokacin fallasa hasken rana ko hasken UV. Nasara tare da phenol yana haifar da 2,2-bis (4-hydroxyphenyl) butane. Yana amsawa tare da esters aliphatic a gaban mai haɓakawa na asali don samar da β-diketones. Acylation tare da acidic anhydride a gaban mai kara kuzari don samar da β-diketones. Yana amsawa da hydrogen cyanide don samar da cyanohydrin. Yana amsawa tare da ammonia don samar da abubuwan da suka samo asali na ketoperidine. Atom ɗin α-hydrogen na butanone ana sauya shi da sauri tare da halogens don samar da ketones iri-iri na halogenated, kamar 3-chloro-2-butanone ta hanyar hulɗa da chlorine. Yin hulɗa tare da 2,4-dinitrophenylhydrazine yana samar da rawaya 2,4-dinitrophenylhydrazone.

Aikace-aikace:

Methyl ethyl ketone (2-butanone, ethyl methyl ketone, methyl acetone) wani kaushi ne na kwayoyin halitta na ƙananan ƙwayar cuta, wanda ke samuwa a yawancin aikace-aikace. Ana amfani da shi a cikin samfuran masana'antu da na kasuwanci azaman ƙaushi don mannewa, fenti, da abubuwan tsaftacewa da kuma azaman ƙauyen de-waxing. Wani nau'in halitta na wasu abinci, methyl ethyl ketone za a iya saki a cikin muhalli ta hanyar volcanoes da gobarar daji. Ana amfani da shi a cikin kayan aikin foda maras hayaki da resins na roba mara launi, azaman sauran ƙarfi, da murfin insurface. Hakanan ana amfani dashi azaman kayan ɗanɗano a cikin abinci.

Ana amfani da MEK azaman kaushi don tsarin sutura daban-daban, misali, vinyl, adhesives, nitrocellulose, da acrylic coatings. Ana amfani dashi a cikin masu cire fenti, lacquers, varnishes, fenti fenti, sealers, glues, magnetic tef, bugu tawada, resins, rosins, tsaftacewa mafita, da kuma polymerization. Ana samunsa a cikin wasu samfuran mabukaci, misali, siminti na gida da na sha'awa, da kayayyakin cika itace. Ana amfani da MEK wajen lalata man mai, da rage ƙarafa, wajen samar da fatun roba, takarda mai haske da foil na aluminum, kuma a matsayin tsaka-tsaki na sinadarai da mai kara kuzari. Yana da kaushi mai cirewa a sarrafa kayan abinci da kayan abinci. Hakanan ana iya amfani da MEK don lalata kayan aikin tiyata da na hakori.
Baya ga ƙera shi, hanyoyin muhalli na MEK sun haɗa da shaye-shaye daga jet da injunan konewa na ciki, da ayyukan masana'antu kamar iskar gas. Ana samun shi da yawa a cikin hayaƙin taba. Ana samar da MEK ta hanyar ilimin halitta kuma an gano shi azaman samfurin ƙwayoyin cuta. Hakanan an samo shi a cikin tsire-tsire, pheromones na kwari, da kyallen jikin dabba, kuma MEK ƙila ƙaramin samfuri ne na al'ada na mammalian metabolism. Yana da karko a ƙarƙashin yanayi na yau da kullun amma yana iya samar da peroxides akan ajiya mai tsawo; waɗannan na iya zama fashewa.