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1,4 butynediol khoom superior khoom
CAS: 110-65-6
Cov khoom siv tshuaj ntawm butynediol: dawb orthorhombic siv lead ua.Melting point 58 ℃, boiling point 238 ℃, 145 ℃ (2KPa), flash point 152 ℃, refractive index 1.450.Soluble hauv dej, kua qaub, ethanol thiab acetone, me ntsis soluble hauv chloroform, insoluble hauv benzene thiab ether.
Kev siv: butynediol tuaj yeem siv los tsim butene glycol, butynediol, n-butanol, dihydrofuran, tetrahydrofuran γ- Cov khoom tseem ceeb ntawm cov organic xws li butyrolactone thiab pyrrolidone tuaj yeem siv ntxiv los tsim cov khoom siv hluavtaws, hluavtaws fibers (nylon-4), tawv tawv, tshuaj, tshuaj tua kab, cov kuab tshuaj (N-methyl pyrrolidone) thiab tshuaj tua kab mob.Butynediol nws tus kheej yog cov kuab tshuaj zoo thiab siv los ua lub ci ci hauv kev lag luam electroplating.
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daj ntseg daj kua kua 1,4-butynediol
1,4-butynediol khoom, tshuaj formula C4H6O2, dawb orthorhombic siv lead ua.Soluble nyob rau hauv dej, acid, ethanol thiab acetone, insoluble nyob rau hauv benzene thiab ether.Nws tuaj yeem ua rau khaus ntawm daim tawv nqaij, tawv nqaij thiab ua pa ntawm lub qhov muag.Hauv kev lag luam, 1,4-butynediol khoom yog npaj los ntawm Reppe txoj kev, catalyzed los ntawm butynediol tooj liab los yog tooj liab bismuth catalyst, thiab npaj los ntawm cov tshuaj tiv thaiv ntawm acetylene thiab formaldehyde nyob rau hauv siab (1 ~ 20 bar) thiab cua sov (110 ~ 112 ° C) .Lub crude butynediol yog tau los ntawm cov tshuaj tiv thaiv, thiab cov khoom tiav yog tau los ntawm concentration thiab refining.
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3-chloropropyne tsis muaj xim muaj kuab lom heev
3-chloropropyne yog cov organic compound nrog cov qauv qauv ch ≡ cch2cl.Cov tsos yog xim tsis muaj nplaim taws ua kua.Melting point -78 ℃, boiling point 57 ℃ (65 ℃), txheeb ze ceev 1.0297, refractive index 1.4320.Flash point 32.2-35 ℃, yuav luag insoluble hauv dej thiab glycerol, miscible nrog benzene, carbon tetrachloride, ethanol, ethylene glycol, ether thiab ethyl acetate.Nws yog tau los ntawm reacting propargyl cawv nrog phosphorus trichloride.Siv ua ib qho nruab nrab hauv cov organic synthesis.
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Cov tshuaj lom neeg ua kua zoo tshaj cov khoom lag luam propargyl cawv
Tsis muaj kob, volatile kua nrog pungent tsw.Nws yog ib qho yooj yim kom tig daj thaum muab tso rau lub sijhawm ntev, tshwj xeeb tshaj yog thaum raug teeb.Nws yog miscible nrog dej, benzene, chloroform, 1,2-dichloroethane, ether, ethanol, acetone, dioxane, tetrahydrofuran thiab pyridine, ib nrab soluble hauv carbon tetrachloride, tab sis insoluble hauv aliphatic hydrocarbons.
Tag nrho cov khoom
Tshwj xeeb hauv kev tsim cov cawv propargyl, 1,4 butynediol thiab 3-chloropropyne
