Ulwelo olumthubi olumthubi oluyityhefu kakhulu 1,4-butynediol

Inkcazelo emfutshane:

I-1,4-butynediol eqinileyo, i-chemical formula C4H6O2, i-crystal orthorhombic emhlophe.Inyibilika emanzini, iasidi, i-ethanol kunye ne-acetone, ayinyibiliki kwi-benzene kunye ne-ether.Inokucaphukisa i-mucous membrane, ulusu kunye nomphezulu wokuphefumla wamehlo.Kumashishini, i-1,4-butynediol eqinile ilungiselelwe ngokukodwa yindlela ye-Reppe, i-catalyzed yi-butynediol copper okanye i-copper bismuth catalyst, kwaye ilungiswe ngokusabela kwe-acetylene kunye ne-formaldehyde phantsi koxinzelelo (i-1 ~ 20 bar) kunye nokufudumeza (110 ~ 112 ° C) .I-butynediol ekrwada ifumaneka ngokusabela, kwaye imveliso egqityiweyo ifunyenwe ngokugxininiswa kunye nokucocwa.

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1, 4 usetyenziso oluphambili lwe-butynediol:kwi-organic synthesis, esetyenziswa njenge-electroplating brightener.

I-1,4-butynediol ingasetyenziselwa ukuvelisa i-butene glycol, i-butanediol, i-n-butanol, i-dihydrofuran, i-tetrahydrofuran γ- Uluhlu lweemveliso ezibalulekileyo zezinto eziphilayo ezifana ne-butyrolactone kunye ne-pyrrolidone zingasetyenziselwa ukuvelisa iiplastiki zokwenziwa, iifayili zokwenziwa (nylon-4 ), isikhumba sokwenziwa, iyeza, i-pesticides, i-solvents (i-N-methyl pyrrolidone) kunye ne-preservatives.

Imbonakalo:ikristale emhlophe okanye ekhanyayo etyheli emhlophe yerhombic (etyheli elikhanyayo emva kokufunxa ukufuma)_ indawo:58℃Boiling_ point 238℃，145℃(2kPa)flash_ Point 152 ℃ refractive index I-chloroform, enganyibilikiyo kwi-benzene kunye nezinye iipropathi ezomeleleyo ibutynediol kulula ukuyityumza emoyeni kwi-25 ° C, ineempawu zemichiza ye-alcohol yokubini, kwaye inokwenza ukusabela kokongeza.

Iingozi zomzimba nezekhemikhali:kwimeko yobushushu obuphezulu, umlilo ovulekileyo okanye oxutywe ne-oxidant, kukho umngcipheko wokutsha kunye nokuqhuma ngenxa ye-friction kunye neempembelelo.Kwiqondo lokushisa eliphezulu, ukuba ingcoliswe yi-mercury ityuwa, i-asidi eqinile, isinyithi somhlaba we-alkaline, i-hydroxide kunye ne-halide, ukuqhuma kunokwenzeka.

Izilumkiso zokugcina:gcina kwindawo epholileyo nengena umoya.Zigcine kude nomlilo kunye nobushushu.Ukutywinwa kwepakethi.Iya kugcinwa ngokwahlukileyo kwi-oxidants, i-alkali kunye neekhemikhali ezidliwayo, kunye nokugcinwa okuxubileyo akuvumelekanga.Izibane ezikhusela uqhushumbo kunye neendawo zokungenisa umoya ziya kwamkelwa.Akuvumelekanga ukusebenzisa izixhobo zoomatshini kunye nezixhobo ezilula ukuvelisa iintlantsi.Indawo yokugcina iya kuxhotyiswa ngezinto ezifanelekileyo zokuqulatha ukuvuza.

Ubonelelo ngeendawo zeHenan Haiyuan Fine Chemical Co., Ltd.:I-1,4-butynediol eqinileyo, entsha ngaphandle kobuqhophololo, umgangatho obalaseleyo.

Ngaphambili: I-1,4 i-butynediol eyomeleleyo imveliso ephezulu

Okulandelayo: I-3-chloropropyne engenambala ulwelo olunokutsha oluyityhefu kakhulu

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