1, 4-Dibromobenzene 98% CAS 106-37-6

1, 4-Dibromobenzene 98%, ib tug dawb los yog greyish dawb crystalline khoom. Cov xim no yog tshwm sim los ntawm kev sib cuam tshuam ntawm bromine atoms hauv nws cov qauv molecular thiab lub nplhaib benzene. Hom siv lead ua no ruaj khov ntawm chav tsev kub, tab sis nws yog ib qho tseem ceeb kom tsis txhob muaj kev sib cuag nrog cov ntaub ntawv tsis sib xws kom tsis txhob muaj tshuaj lom neeg tshwm sim. Nws yog khoom, tab sis thaum kub nce siab tshaj nws melting point, nws pib yaj thiab hloov mus rau hauv lub xeev ua kua. Thaum qhov kub nce ntxiv mus rau qhov kub kub, nws yuav pib boil thiab hloov mus rau hauv lub xeev gaseous. Nws yog yooj yim soluble nyob rau hauv organic solvents xws li kub ethanol, acetone, ether, thiab kub benzene, tab sis insoluble nyob rau hauv dej. Qhov solubility no tso cai rau kev npaj thiab siv cov kev daws teeb meem ntawm 1,4-dibromobenzene hauv cov chaw kuaj thiab kev tsim khoom los ntawm kev xaiv cov kuab tshuaj uas tsim nyog. Cov tshuaj no tej zaum yuav muaj teeb meem rau ib puag ncig. Kev saib xyuas tshwj xeeb yuav tsum tau them rau cov dej qias neeg, tshwj xeeb tshaj yog cov bioaccumulation hauv cov dej hauv dej. Nws daim ntawv thov hauv chemistry yog qhov dav thiab dav. Nws ua lub luag haujlwm tseem ceeb uas yog ib qho tseem ceeb hauv nruab nrab ntawm cov organic synthesis, cov khoom siv raw rau cov tshuaj tiv thaiv polymerization, cov khoom siv hluavtaws rau dyes thiab pigments, catalyst thiab catalyst carrier, cov khoom siv tseem ceeb rau kev siv tshuaj synthesis, cov tshuaj tiv thaiv reagent lossis cov khoom txheem hauv analytical chemistry, cov khoom siv hauv cov ntaub ntawv tshawb fawb, cov pa phem lossis cov cim hauv ib puag ncig kev tshawb fawb, surfactant lossis nws tus kheej-assembled monolayer raw khoom hauv kev tshawb fawb saum npoo, thiab cov khoom siv electrode lossis electrolyte additive hauv electrochemistry.

Melting point {{0}} degree C (lit.), Boiling point 219 degree C (lit.), Ceev 1.841 g/ml ntawm 25 degree C (lit.), Vapor siab 0. 134 ntawm 35 degree C (hine et al., 1963), Refractive index 1.5742, Flash point 219-220 degree C, Cia mob ntxig cua, chav tsev kub, Solubility hauv cawv, benzene, chloroform, toluene thiab carbon tetrachloride Insoluble hauv ether., Morphology crystals, Xim tsis muaj xim rau yuav luag dawb, Xyaum soluble, Qhov siab tshaj plaws wavelength(λ max)282nm(EtOH)(lit.), BRN 1904543, Henry's Law Constant5.0 x 10-4 atm? m3/mol ntawm 25 degree (Hine and Mookerjee, 1975), Stable Combustible. InChIKeySWJPEBQEEAHIGZ-UHFFFAOYSA-N.

Ob txoj kev rau kev sib txuas1, 4-Dibromobenzene 98%muaj npe hauv qab no:

Synthesis ntawm 1,4-dibromobenzene: muab 4-bromoaniline nyob rau hauv lub khob iav, dej, l dichloromethane. Muab cov tshuaj tiv thaiv lub raj mis tso rau hauv ib da dej dej khov, do, thiab maj mam ntxiv tert butyl nitrite rau lub raj mis tshuaj tiv thaiv nrog lub koob txhaj tshuaj. Tom qab tso tseg, do dua, ntxiv butanedione rau hauv lub raj mis tshuaj tiv thaiv nrog lub micro koob txhaj, tom qab ntawd ntxiv carbon tetrabromide, thiab hnov ​​​​mob nrog lub teeb ntawm chav tsev kub. Tom qab cov tshuaj tiv thaiv, quench nrog dej, rho tawm cov tshuaj tiv thaiv ua kua ob zaug nrog dichloromethane, thiab tom qab ntawd qhuav cov organic theem nrog anhydrous sodium sulfate, lim, thiab kiv cua nyob rau hauv lub siab txo kom tau cov khoom crude nrog ib tug me me ntawm cov kuab tshuaj. Tom qab ntawd cov khoom nyoos tau muab cais los ntawm silica gel chromatography, thiab cov eluent yog sib xyaw ntawm cov roj av ether thiab ethyl acetate kom tau txais cov khoom kawg: 1, 4-dibromobenzene yog cov kua tsis muaj xim pob tshab, nrog cov txiaj ntsig ntawm 78%.

Cov txheej txheem tsim khoom rau kev sib txuas ntawm 1,4-dibromobenzene suav nrog cov txheej txheem hauv qab no: xaiv cov ntaub ntawv hlau los ntxiv rau benzene, muab tso rau hauv lub tshuab hluav taws xob enamel, thiab ntxiv bromine. Ua ntej ua kom qhov kub thiab txias tsis tu ncua, ces tsa qhov kub thiab txias kom qhov kub tsis tas li. React kom txog thaum cov roj xim av ploj mus kom tau bromide. Lim kom tshem tawm cov ntaub ntawv hlau hauv cov bromide. Ntxuav nrog dej, ces ntxiv chav rau distillation, ces tshem tawm cov dej txheej, qhuav thiab distilled nrog calcium chloride, thiab sau brominated benzene. Tom qab kev kho mob, cov residue tau muab tso rau hauv lub lauj kaub tais diav sai sai kom condense thaum nws kub, thiab tom qab ntawd ua ke nrog cov khoom tsim tawm bromobenzene. Kev sib xyaw ua ke yog qhuav, thiab tom qab ntawd activated carbon yog ntxiv rau decolorization. Cov sib tov yog recrystallized nrog methanol kom tau cov khoom tiav ntawm 1, 4-dibromobenzene.

1, 4-dibromobenzene yog hydrocarbon derivative, uas yog dav siv nyob rau hauv organic synthesis thiab dye intermediates. Cov tshuaj lom yuav tsum tau muab cia rau hauv qhov chaw txias thiab cua txias. Khaws kom deb ntawm qhov hluav taws kub thiab cua sov. Tiv thaiv los ntawm tshav ntuj ncaj qha. Qhov kub cia yuav tsum tsis pub tshaj 30 degree. Ntim sealing. Nws yuav tsum tau muab cais los ntawm oxidant thiab yuav tsum tsis txhob tov. Cov khoom siv tua hluav taws ntawm cov khoom sib xws thiab ntau npaum li cas yuav tsum tau muab. Lub chaw cia khoom yuav tsum tau nruab nrog cov ntaub ntawv tsim nyog kom muaj cov dej xau. Qhib hluav taws thiab kub kub yog cov nplaim taws. Nws cov hmoov thiab huab cua tuaj yeem tsim qhov sib xyaw tawg, thiab thaum nws ncav cuag ib qho concentration, nws yuav tawg thaum nws ntsib Mars. Nyob rau hauv rooj plaub uas qhib hluav taws, kub kub, los yog kev sib cuag nrog oxidant, nws muaj peev xwm hlawv thiab emit cov pa roj. Nws yog decomposed los ntawm high tshav kub kom tso pa lom. Cov neeg tua hluav taws yuav tsum hnav lub qhov ncauj qhov ntswg thiab lub cev tag nrho cov hluav taws tua hluav taws kom tua hluav taws nyob rau hauv qhov siab. Extinguishing tus neeg sawv cev: dej pos huab, ua npuas ncauj, hmoov qhuav, carbon dioxide, xuab zeb.

1, 4-Dibromobenzene 98%raws li ib qho tseem ceeb ntawm cov organic compound, muaj kev siv dav thiab dav siv hauv thaj chaw ntawm chemistry. Qhov sib xyaw no ua lub luag haujlwm tseem ceeb hauv ntau cov tshuaj subfields vim nws cov qauv tshwj xeeb thiab cov khoom.
1. Organic synthesis: Nws yog ib qho tseem ceeb nruab nrab ntawm cov organic synthesis. Ob lub bromine atoms hauv nws cov molecule tuaj yeem hloov tau los ntawm ntau pawg ua haujlwm, yog li ua ke cov organic tebchaw nrog cov qauv tshwj xeeb thiab kev ua haujlwm. Los ntawm nucleophilic hloov cov tshuaj tiv thaiv, nws tuaj yeem hnov ​​​​mob nrog amines, cawv, thiols, thiab lwm yam los tsim cov khoom hloov pauv. Cov khoom no muaj kev siv dav hauv kev lag luam xws li tshuaj, tshuaj tua kab, thiab tshuaj pleev xim.
2. Cov tshuaj tiv thaiv Polymerization: Nws kuj tuaj yeem ua cov khoom siv raw rau cov tshuaj tiv thaiv polymerization, koom nrog cov tshuaj tiv thaiv polymerization, thiab tsim cov tshuaj polymer. Piv txwv li, nws tuaj yeem dhau los ua cov tshuaj tiv thaiv polymerization nrog acrylic monomers los tsim cov ntaub ntawv polymer nrog cov khoom zoo heev. Cov ntaub ntawv polymer no muaj kev siv dav hauv cov teb xws li yas, roj hmab, thiab txheej txheej.
3. Synthetic dyes thiab pigments: Lawv kuj ua lub luag haujlwm tseem ceeb hauv kev tsim cov dyes thiab pigments. Los ntawm cov tshuaj tiv thaiv tshwj xeeb, 1,4-dibromobenzene tuaj yeem hloov mus rau hauv cov xim zoo nkauj thiab xim xim. Cov dyes thiab pigments muaj ntau yam kev siv hauv teb xws li textiles, tawv, thiab xim. Lawv tsis tsuas yog ntxiv cov xim nplua nuj rau cov khoom, tab sis kuj nce tus nqi ntxiv ntawm cov khoom.

4. Catalysts thiab catalyst carriers: Lawv kuj siv tau los ua catalysts lossis catalyst carriers los txhawb lossis ceev cov tshuaj tiv thaiv hauv tshuaj. Piv txwv li, nyob rau hauv tej yam kev cuam tshuam cov organic, nws muaj peev xwm ua hauj lwm raws li ib theem hloov catalyst los txhim kho cov tshuaj tiv thaiv tus nqi thiab tawm los. Tsis tas li ntawd, nws tseem tuaj yeem ua tus cab kuj rau cov hlau catalysts, txhim kho lawv cov haujlwm thiab kev ruaj ntseg.
5. Tshuaj synthesis: Nws kuj muaj cov ntawv thov tseem ceeb hauv kev siv tshuaj synthesis. Ntau cov tshuaj molecules muaj 1,4-dibromobenzene structural units, uas ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm lom neeg thiab cov tshuaj pharmacological ntawm cov tshuaj. Los ntawm kev sib txuas cov tshuaj molecules uas muaj 1,4-dibromobenzene structural units, cov tshuaj uas muaj cov kev kho mob tshwj xeeb tuaj yeem tsim kho rau ntau yam kab mob.
6. Analytical Chemistry: Hauv analytical chemistry, nws tuaj yeem siv los ua cov tshuaj tiv thaiv reagent lossis cov khoom siv rau kev soj ntsuam zoo thiab ntau yam. Vim nws cov qauv tshuaj lom neeg tshwj xeeb thiab cov khoom, nws tuaj yeem hnov ​​​​mob nrog cov sib txuas tshwj xeeb kom ua tiav kev tshawb pom thiab ntsuas cov hom phiaj sib txuas. Tsis tas li ntawd, nws tseem tuaj yeem ua tus cim rau kev tshuaj xyuas chromatographic, siv rau kev sib cais thiab ua kom huv.
7. Kev tshawb fawb txog ib puag ncig: Hauv kev tshawb fawb ib puag ncig, nws tuaj yeem siv los ua tus cim lossis cov cim rau ib puag ncig cov pa phem, rau kev saib xyuas ib puag ncig thiab kev tswj kev ua qias tuaj. Los ntawm kev txheeb xyuas thiab txheeb xyuas cov khoom muaj kuab paug hauv ib puag ncig, peb tuaj yeem nkag siab txog qhov chaw, kev faib tawm, thiab kev tsiv teb tsaws thiab kev hloov pauv ntawm cov pa phem, muab kev tshawb fawb txog kev tiv thaiv ib puag ncig thiab kev tswj hwm.
8. Surface science: Hauv kev tshawb fawb saum npoo av, nws tuaj yeem siv los ua surfactant lossis raw khoom rau nws tus kheej sib dhos monolayers los npaj cov ntaub ntawv nrog cov khoom tshwj xeeb. Cov ntaub ntawv no muaj kev siv dav hauv kev lag luam xws li nanotechnology thiab biosensors.
9. Electrochemistry: Hauv kev ua haujlwm ntawm electrochemistry,1, 4-Dibromobenzene 98%tuaj yeem siv los ua cov khoom siv hluav taws xob lossis cov khoom siv electrolyte los txhim kho kev ua haujlwm thiab kev ruaj ntseg ntawm electrodes. Los ntawm kev qhia txog bromine atoms, cov qauv hluav taws xob thiab cov tshuaj tiv thaiv electrochemical kinetics ntawm cov khoom siv hluav taws xob tuaj yeem hloov pauv, yog li txhim kho cov txiaj ntsig thiab kev ua neej ntawm cov electrode.

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