Chaw tsim tshuaj paus Zoo Nqe N, N-DIMETHYLFORMAMIDE (DMF) CAS 68-12-2
piav qhia
Lub npe los ntawm qhov tseeb tias nws yog dimethyl hloov pauv ntawm formamide (amide ntawm formic acid), thiab ob pawg methyl nyob rau ntawm N (nitrogen) atom.N, N-DIMETHYLFORMAMID yog lub siab kub npauj npaim (hydrophilic) aprotic hnyav, thiab Phau Ntawv Tshuaj tuaj yeem txhawb nqa SN2 cov tshuaj tiv thaiv.N, N-DIMETHYLFORMAMID yog tsim los ntawm formic acid thiab dimethylamine.N, N-DIMETHYLFORMAMID tsis ruaj khov (tshwj xeeb tshaj yog kub) nyob rau hauv muaj cov hauv paus muaj zog xws li sodium hydroxide lossis muaj zog acids xws li hydrochloric acid lossis sulfuric acid, thiab hydrolyzes rau formic acid thiab dimethylamine.Nws yog ruaj khov heev nyob rau hauv huab cua thiab thaum rhuab mus boiling.Thaum qhov kub siab tshaj 350 ℃, nws yuav poob dej thiab tsim carbon monoxide thiab dimethylamine.N, N-DIMETHYLFORMAMID yog ib qho zoo aprotic polar solvent, uas tuaj yeem yaj feem ntau cov organic thiab inorganic tshuaj, thiab miscible nrog dej, cawv, ethers, aldehydes, ketones, esters, halogenated hydrocarbons thiab aromatic hydrocarbons, thiab lwm yam.Qhov txiaj ntsig zoo kawg ntawm N, N-DIMETHYLFORMAMID molecule yog nyob ib puag ncig los ntawm methyl pawg, ua rau muaj kev cuam tshuam tsis zoo, yog li cov ions tsis zoo tuaj yeem mus txog, tab sis tsuas yog cov ions zoo cuam tshuam.Cov liab qab anion muaj zog ntau dua li cov solvated anion.Ntau cov tshuaj tiv thaiv ionic tau yooj yim dua hauv N, N-DIMETHYLFORMAMID dua li cov kuab tshuaj protic, piv txwv li, cov tshuaj tiv thaiv ntawm carboxylates nrog halogenated hydrocarbons hauv N, N-DIMETHYLFORMAMID ntawm chav tsev kub, tuaj yeem tsim cov esters siab, tshwj xeeb tshaj yog tsim rau synthesis ntawm sterically hindered esters.
Synthesis.Synonyms
amide, n, n-dimethyl-formicaci;Dimethylamidkyselinymravenci;dimethylamidkyselinymravenci;N, N-DIMETHYLFORMAMIDE, 99.9+%, HPLCGRADE;NN-DIMETHYLFORChemicalbookMAMIDE99.8%ACS&;N, N-DIMETHYLFORMAMIDE, 4X25ML;N, N-DIMETHYLFORMAMIDE, MOLECULARBIOLOGYREAGENT;N, N-DIMETHYLFORMAMIDENEUTRALMARKER * FORCAPILLARY
Kev siv DMF
DMF yog cov kuab tshuaj zoo rau ntau hom polymers siab xws li polyethylene, polyvinyl chloride, polyacrylonitrile, polyamide, thiab lwm yam., thiab tuaj yeem siv rau ntub spinning ntawm hluavtaws fibers xws li polyacrylonitrile fibers, thiab synthesis ntawm polyurethane;Nws yog siv rau kev ua yeeb yaj kiab yas;nws kuj tseem siv tau los ua cov xim stripper rau tshem cov xim;Nws kuj tseem tuaj yeem yaj qee cov xim tsis tshua muaj kuab lom, yog li cov pigments muaj cov yam ntxwv ntawm dyes.DMF yog siv rau aromatic extraction thiab kev sib cais thiab rov qab ntawm butadiene los ntawm C4 feem thiab isoprene los ntawm C5 feem, thiab kuj yuav siv tau raws li ib tug zoo reagent rau kev sib cais ntawm non-hydrocarbon Cheebtsam los ntawm paraffin.Nws muaj kev xaiv zoo rau kev solubility ntawm isophthalic acid thiab terephthalic acid: isophthalic acid yog ntau soluble hauv DMF dua li terephthalic acid, hnyav extraction los yog ib nrab crystallization, ob qho tib si sib cais.Hauv kev lag luam petrochemical, DMF tuaj yeem siv los ua cov pa roj kom cais thiab ua kom cov pa roj.Raws li ib tug curing neeg sawv cev rau ntxuav Chemicalbook nyob rau hauv lub polyurethane kev lag luam, nws yog tsuas yog siv nyob rau hauv zus tau tej cov tawv hluavtaws tawv;Raws li cov kuab tshuaj nyob rau hauv kev lag luam acrylic fiber, nws yog tsuas yog siv nyob rau hauv qhuav spinning zus tau tej cov acrylic fiber;Nyob rau hauv kev lag luam hluav taws xob raws li ib tug quenching ntawm tin-plated qhov chaw thiab Circuit Court boards Lwm yam kev lag luam muaj xws li cov cab kuj ntawm txaus ntshai gases, solvents rau tshuaj crystallization, adhesives, thiab lwm yam. Nyob rau hauv cov organic tshuaj, DMF tsis yog tsuas yog dav siv los ua ib qho hnyav rau cov tshuaj tiv thaiv, tab sis kuj yog ib qho tseem ceeb nruab nrab ntawm cov organic synthesis.Hauv kev lag luam tshuaj tua kab, nws tuaj yeem siv los tsim ciprofloxacin;Hauv kev lag luam kws tshuaj, nws tuaj yeem siv los ua ke iodine, doxycycline, cortisone, vitamin B6, iodine, quercetin, pyrantel, N-formylsarcomin, Oncoline, methoxyfen, benzodiazepine, cyclohexyl nitrosourea, furoflurouracil, hemostatic, chlorpheniramine, sulfonamides Production.DMF muaj cov nyhuv catalytic hauv cov tshuaj tiv thaiv ntawm hydrogenation, dehydrogenation, lub cev qhuav dej thiab dehydrohalogenation, kom cov tshuaj tiv thaiv kub qis dua thiab cov khoom purity zoo tuaj.
1. Nws yog cov kuab tshuaj organic zoo heev, siv los ua cov kuab tshuaj rau polyurethane, polyacrylonitrile, thiab polyvinyl chloride, thiab tseem siv los ua cov extractant, ua raw khoom rau cov tshuaj thiab tshuaj tua kab.
2. Siv ua analytical reagent thiab hnyav rau vinyl resin thiab acetylene
3. Nws tsis yog tsuas yog cov khoom siv tshuaj lom neeg nrog ntau yam kev siv, tab sis kuj yog ib qho hnyav hnyav nrog ntau yam kev siv.DMF yog cov kuab tshuaj zoo rau ntau hom polymers siab xws li polyethylene, polyvinyl chloride, polyacrylonitrile, polyamide, thiab lwm yam., thiab tuaj yeem siv rau ntub spinning ntawm hluavtaws fibers xws li polyacrylonitrile fibers, thiab synthesis ntawm polyurethane;Nws yog siv los ua zaj duab xis yas;nws kuj tseem siv tau los ua cov xim stripper rau tshem cov xim;Nws kuj tseem tuaj yeem yaj qee cov xim tsis muaj kuab lom, kom cov xim muaj cov yam ntxwv ntawm dyes.DMF yog siv rau aromatic extraction thiab kev sib cais thiab rov qab ntawm butadiene los ntawm C4 feem thiab isoprene los ntawm C5 feem, thiab kuj yuav siv tau raws li ib tug zoo reagent rau kev sib cais ntawm non-hydrocarbon Cheebtsam los ntawm paraffin.Nws muaj kev xaiv zoo rau kev solubility ntawm isophthalic acid thiab terephthalic acid: isophthalic acid yog ntau soluble hauv DMF dua li terephthalic acid, hnyav extraction yog nqa tawm nyob rau hauv dimethyl chemicalbook acid formamide los yog ib nrab crystallized, ob tug yuav raug muab cais.Hauv kev lag luam petrochemical, DMF tuaj yeem siv los ua cov pa roj kom cais thiab ua kom cov pa roj.Hauv cov tshuaj tiv thaiv organic, DMF tsis yog tsuas yog siv los ua cov kuab tshuaj rau cov tshuaj tiv thaiv, tab sis kuj yog ib qho tseem ceeb hauv nruab nrab ntawm cov organic synthesis.Hauv kev lag luam tshuaj tua kab, nws tuaj yeem siv los tsim ciprofloxacin;Hauv kev lag luam kws tshuaj, nws tuaj yeem siv los ua ke iodine, doxycycline, cortisone, vitamin B6, iodine, quercetin, pyrantel, N-formylsarcomin, Tumorine, Methoxyfen mustard, Bian nitrogen mustard, cyclohexyl nitrosourea, furoflurouracil, hepatic acid, , bilevitamin, chlorpheniramine, thiab lwm yam DMF muaj cov nyhuv catalytic hauv cov tshuaj tiv thaiv ntawm hydrogenation, dehydrogenation, lub cev qhuav dej thiab dehydrohalogenation, kom cov tshuaj tiv thaiv kub qis dua thiab cov khoom purity zoo tuaj.
4. Tsis-aqueous titration hnyav.Solvent rau vinyl thiab acetylene.Kev txiav txim siab photometric.Gas chromatographic nyob ruaj ruaj tov (qhov siab tshaj plaws kev khiav hauj lwm kub 50 ℃, hnyav yog methanol), sib cais Chemicalbook analysis C2 ~ C5 hydrocarbons, thiab muaj peev xwm cais ib txwm, isobutene thiab cis, trans-2-butene.Tshuaj tua kab residue tsom xam.Organic Synthesis.Peptide synthesis.Rau kev lag luam yees duab.
Specification ntawm DMF
| Compound | Specification |
| Qhov tshwm sim | meej |
| General | ≥99.9% |
| Methanol | ≤ 0.001% |
| Xim (PT-CO), Hazen | ≤ 5 |
| Dej,% | ≤ 0.05% |
| Hlau, mg / kg | ≤ 0.05 |
| Acidity (HCOOH) | ≤ 0.001% |
| Basicity (DMA) | ≤ 0.001% |
| PH (25 ℃, 20% aqueous) | 6.5-8.0 Nws |
| Conductivity (25 ℃, 20% aqueous), μs / cm3 | ≤ 2 |
Packing ntawm DMF
190kg / nruas
Kev khaws cia yuav tsum tau txias, qhuav thiab ventilate.
