Chaw tsim khoom zoo nqe n, n-Dimethylformamide (DMF) CAS 68-12-2
kev piav txog
Lub npe los ntawm qhov tseeb tias nws yog lub Dimethyl hloov chaw ntawm formamide (tus neeg sawv cev ntawm cov acid), thiab cov pab me me yog nyob rau ntawm n (nitrogen) atom. N, n-dimethylformamid yog lub siab-npau polar (hydrophilic) Aprator fanticent, thiab tshuaj lombook tuaj yeem txhawb nqa tus sn2 tawm mechanism. N, n-dimethylformamid yog tsim kev siv cov formic acid thiab dimethylamine. N, n-dimethylformamid tsis ruaj khov (tshwj xeeb tshaj yog nyob rau hauv lub xub ntiag xws li bases hydroxide lossis sulfuric acid los yog hydrolyzes los formic acid thiab dimethylamine. Nws yog qhov ruaj khov heev nyob rau hauv huab cua thiab thaum rhuab mus rhaub. Thaum qhov kub tau siab dua 350 ℃, nws yuav poob dej thiab tsim cov pa roj carbon monoxide thiab dimethylamine. N, n-dimethylformamid yog ib qho zoo aprot polar colvent, uas tuaj yeem ua rau dej cawv, thiab cov roj ntsha, cov roj av, cov ntxhiab hydrocarbons thiab cov ntxhiab hydrocarbons, thiab lwm yam. Lub zoo them rau qhov kawg ntawm N, N-Dimethylformamid Molecule muaj ib puag ncig los ntawm methyl pawg, yog li ntawd ions yuav tsis tuaj yeem ua tau, tab sis tsuas yog muaj ions yuav cuam tshuam. Cov Anion Naked yog ntau dua ntau dua li daws cov anion. Ntau yam kev xav tau yooj yim tshaj tawm hauv n, n-deegthylormiid hauv n, n-Dimethylates nyob rau hauv chav tsev kub, tuaj yeem tsim cov txiaj ntsig siab, tshwj xeeb yog tsim rau Cov synthesis ntawm kev sib txawv sib txuas lus.
Synthesis.Synony
Nyob, N, n-Dimethyl-formicaci; Dimethylamidkyselinymravenci; dimethylamidkyselinymravenci; N, n-daimethylformamide, 99.9 +%, huglcgrade; Nn-dimethylforchemicalbaulicalbookmamide99.8% ACS &;N, n-daimethylformamide, 4 x 225ml; N, n-daimethylformamide, molecularibiologyreatgent; N, n-daimethylformamideneutalmarker * forcapillary
Cov ntawv thov ntawm DMF
DMF yog cov kuab tshuaj zoo rau ntau cov polyethylene xws li cov hluavtaws, polyacrylonitrile fibers, thiab hluavtaws ntawm polyurethane; Nws yog siv rau cov yeeb yaj kiab yas; Nws kuj tseem siv tau los ua cov xim stripper rau tshem cov xim; Nws tseem tuaj yeem yaj qee cov piglivity tsawg, yog li ntawd cov pigments muaj cov yam ntxwv muaj cov yam ntxwv ntawm dyes. DMF yog siv rau cov tshuaj uas muaj ntxhiab thiab rov qab los ntawm C4 feem ntawm C4 feem ntawm C4 feem ntawm cov khoom siv tsis muaj zog los ntawm paraffin. Nws muaj kev xaiv zoo rau lub solubility ntawm irophthalic acid thiab terophalic acid yog ntau soluble nyob rau hauv drephent extraction lossis ib nrab crystallization, ob tug tuaj yeem sib cais. Hauv kev lag luam petrochemical, DMF tuaj yeem siv los ua cov roj nqus kom cais thiab ua roj av. Raws li tus kws kho mob rau kev tu tshuaj rau kev lag luam polyurethane, nws yog tsuas yog siv nyob rau hauv kev tsim cov tawv ntub tawv; Raws li cov kuab tshuaj nyob rau hauv acrylic kev lag luam, nws yog tsuas yog siv nyob rau hauv lub tshuab qhuav spinning ntawm acrylic fiber; nyob rau hauv kev lag luam hluav taws xob raws li kev quenching ntawm tin-plated seem thiab Circuit Court lwm yam kev lag luam crystall, DMF tsis tsuas yog siv dav siv raws li cov tshuaj tiv thaiv, tab sis Kuj tseem ceeb hauv nruab nrab hauv cov synthic synthesis. Hauv kev siv tshuaj tua kab, nws tuaj yeem siv los tsim Ciprofloxacin; Hauv kev lag luam kws tshuaj, nws tuaj yeem siv los ua ke iodine, deepoohone, tshuaj vitamyfen, Hemostatouracil, Hemostative Acid, Bepartame, MeSROL, Bilevita, chlorpheniramine, sulfonamides ntau lawm. DMF muaj cov nyhuv catalytic hauv kev sib cuam tshuam ntawm hydrogenation ntawm hydrogenation ntawm hydrogenation ntawm hydrogenation ntawm hydrogenation, lub cev qhuav dej, kom cov tshuaj tiv thaiv kub yog kev txhim kho.
1. Nws yog ib qho zoo nkauj organic zoo, siv los ua cov kuab tshuaj rau polyurethanitrile, thiab tseem siv cov khoom siv raw rau tshuaj thiab tshuaj tua kab.
2. Siv los ua kev ntsuas tshuaj thiab cov kuab tshuaj rau Vinyl Resin thiab Acetylene
3. Nws tsis yog tsuas yog cov tshuaj lom neeg muaj kuab lom nrog ntau yam ntawm kev siv, tab sis kuj yog cov kuab tshuaj zoo heev nrog ntau yam ntawm kev siv. DMF yog cov kuab tshuaj zoo rau ntau cov polyethylene xws li cov hluavtaws, polyacrylonitrile fibers, thiab hluavtaws ntawm polyurethane; Nws yog siv rau cov yeeb yaj kiab yas; Nws kuj tseem siv tau los ua cov xim stripper rau tshem cov xim; Nws tseem tuaj yeem yaj qee cov piglivity tsawg, yog li ntawd cov pigments muaj cov yam ntxwv muaj cov yam ntxwv ntawm dyes. DMF yog siv rau cov tshuaj uas muaj ntxhiab thiab rov qab los ntawm C4 feem ntawm C4 feem ntawm C4 feem ntawm cov khoom siv tsis muaj zog los ntawm paraffin. Nws muaj kev xaiv zoo rau lub solubility ntawm isophthalic acid thiab terophalic acid yog nqa tawm hauv dimethyl tshuaj formamide lossis ib nrab crystallized, ob tau sib cais. Hauv kev lag luam petrochemical, DMF tuaj yeem siv los ua cov roj nqus kom cais thiab ua roj av. Hauv cov organic kev tawm tsam, DMF tsis yog tsuas siv tau siv raws li kev daws rau cov tshuaj tiv thaiv, tab sis kuj tseem ceeb hauv nruab nrab hauv cov organic synthesis. Hauv kev siv tshuaj tua kab, nws tuaj yeem siv los tsim Ciprofloxacin; Hauv kev lag luam kws tshuaj, nws tuaj yeem siv los ua ke iodine, deepoone, medranselfocilin, ferpohexyl nitrosourea, feroflurouracil, hemostatic acid, Bepartame, Meestrol, bilevitamin, chlorpheniramine, thiab lwm yam. DMF muaj cov kev cuam tshuam ntawm hydrogenation, kom cov tshuaj tiv thaiv kub yog kev txhim kho.
4. Tsis yog-aqueous lub zog siv zog. Khawb rau cov yas thiab acetylene. Kev txiav txim siab photometric. Roj Chromatographic ruaj khov (siab tshaj plaws kev ua haujlwm kub 50 ℃, hnyav yog methanol), cais tawm ib txwm muaj, thiab tuaj yeem sib cais thiab CIS, trans-2-butene. Cov tshuaj tua kab thaiv cov tshuaj tua kab. Organic synthesis. Peptide synthesis. Rau kev lag luam yees duab.
Cov lus qhia tshwj xeeb ntawm DMF
| Sib xyaw | Kev qhia tshwj xeeb |
| Kev tshwm sim | meej |
| Nais phoo | ≥99.9% |
| Methanol | I≤0.001% |
| Xim (PT-CO), hazen | Medicited 15 |
| Dej,% | I≤0.05% |
| Hlau, mg / kg | I≤0.05 |
| Acidity (HCOOH) | I≤0.001% |
| Yooj Yim (DMA) | I≤0.001% |
| Ph (25 ℃, 20% aqueous) | 6.5-8.0 |
| Conductivity (25 ℃, 20% aqueous), μs / cm | ≤2 |
Ntim ntawm DMF
190kg / nruas
Cia yuav tsum yog nyob rau ntawm txias, qhuav thiab cua.
